How to Farm Pike-Perch (2022)

Identity

Sander lucioperca Linnaeus, 1758 [Percidae]

FAO Names: En - Pike-perch, Fr - Sandre, Es - Lucioperca

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Biological Features

Body elongate, the snout pointed, head length greater than depth of body or equal to it. Upper jaw extends past eye level, small teeth in jaws and several large fangs in front also (never more of 18 branched rays). Two dorsal fins, the first spiny and separated by a narrow interspace from the second. Anal fin with 2-3 spines and 11-13 soft rays. Pelvic fins widely spaced, the distance between them almost as great as the base of one fin. Lateral line with 84-95 scales. Colour greenish-grey or brown on the back and sides becoming lighter on the lower sides and white on the belly. Young fish have 8-10 indistinct dusky bars on the sides; these are faint in the adult. Dorsal and tail fins dark spotted.

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Profile

Historical Background

The beginnings of pike-perch culture date to the nineteenth century and are linked to carp (Cyprinus carpio) culture in earthen ponds in Central and Eastern Europe. Pike-perch was produced in insignificant quantities as a so-called additional fish. In the early twentieth century, production began of pike-perch stocking material (summer and fall fry) in earthen ponds (natural spawning) for stocking open waters. It was produced in monoculture (summer fry) or in polyculture with carp (fall fry). Pond pike-perch culture also began to develop in Western Europe (e.g. France) in the second half of the twentieth century. This type of pike-perch production has been and remains extensive in character, and this species has been and currently is viewed only as a supplementary fish.

At the beginning of the twenty-first century, the first aquaculture facilities producing pike-perch in recirculation aquaculture systems (RAS) were established in Western Europe and, by the close of the first decade, there were less than ten of these facilities. Methods for intensive pike-perch culture are in the initial stages of development but this species is considered to offer good prospects for European aquaculture.

Main Producer Countries

Currently, the main producing countries are the Czech Republic, Denmark, Hungary, Romania, Tunisia and Ukraine. In addition to the other countries shown on the FAO map, pike-perch are also grown in the Netherlands and Poland.

How to Farm Pike-Perch (4)

Main producer countries of Pike-perch (FAO Fishery Statistics, 2009)

Habitat and Biology

Pike-perch inhabits lakes, rivers, reservoirs and the coastal marine waters (in the catchment areas of the Caspian, Aral, Baltic, Black, and North seas. It is now widespread in France and western Europe, is rapidly extending its range in eastern and central England, and is acclimated to the waters of northern Africa (Algeria, Morocco, Tunisia), North America, and Asia (e.g. China, Kyrgyzstan).

This species generally attains lengths of 50-70 cm and body weights (BW) of 2-5 kg but a maximum length of 130 cm and weights of 12-18 kg have been reported. Males reach sexual maturity at 2-3 years, females at 3-4 years. Depending on geographical zone, spawning is from April to mid June. Water temperature at spawning initiation ranges from 8.0 to 15.0 °C. Generally, water depth at natural spawning grounds ranges from 0.5 to 3.0 m. Pike-perch deposit eggs into nests that they have built on sand, gravel (preferred substrate), or aquatic vegetation. Males actively guard nests with eggs for 5-8 days until the larvae hatch. Relative fecundity is 170-230 eggs/g BW. Eggs are small; the diameter of unhardened and hardened eggs range from 0.6-1.0 mm and 0.9-1.6 mm respectively. One kg comprises 1.5-2.2 million (unhardened) or 1.0-1.5 million (hardened) eggs. Incubation time is from 3 days (20 °C) to 11 days (10 °C) (80-120 °D). Incubation time for pike-perch eggs (from fertilization to larval hatching) can be calculated with the formula: I = 30 124 × T-2,07, where: I – incubation time (h), T – water temperature (°C).

Larvae are small and devoid of pigment: BW – 0.4-0.5 mg and body length TL – 4.0-5.5 mm. Resorption of yolk sac reserves and lipid droplet is completed at TL 5.8-6.5 mm. Scales begin being laid down at TL 23-28 mm (initially on the caudal peduncle). Pike-perch are regarded as having three trophic phases: plankton phase until fish are TL 13-30 mm; mixed feed stage (invertebrate fauna + fish) until fish are TL 24-70 mm; and predatory phase (feed comprised exclusively of fish) from TL 34-80 mm.

Production

Production Cycle

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Production cycle of Pike-perch

Production Systems

Seed Supply

Spawners are obtained mostly from natural waters. Catches are made in fall (October-November; summer seine) or spring (March-April; trap gear, e.g. fyke-nets). Fish caught in the fall are held in earthen ponds. For each 1 kg of spawners there should be 10 m² of pond bottom and 1.5-3.5 kg of fodder fish. Spawners should be removed from the ponds when the mean daily water temperature is 8.0-9.0 °C and transported to spawning ponds or hatcheries. A few farms keep broodstocks, usually numbering 50-80 individuals/ha, which are kept in earthen ponds. A few farms produce pike-perch in RAS, and keep spawners in these systems (initial stages of domestication).

Pike-perch do not exhibit distinct sexual dimorphism. Males usually exhibit breeding coloration in the pre-spawning period when they are darker than females. Females have distinctly more distended abdomens. Females with body weights of 1.5-4.0 kg and males of 0.8-2.0 kg are recommended for artificial spawning. Pike-perch spawners should be transported in tanks with aeration. If the transport time is les than 2 hours and the water temperature is 8.0-15.0 °C in 1 m³ tanks, a maximum of 60 kg of fish can be moved. During transport it is recommended that anti-stress agents such as table salt (5 g NaCl/litre) are applied.

Several methods of pike-perch reproduction are used:

(Video) AquaPri farming Zander (pike perch) at our top-modern fully recirculated plant
  • Uncontrolled natural reproduction. One set of spawners (spawner set – 1 ? + 2 ?) per 1-4 ha is released into earthen carp ponds. After spawning, the fish are left in the pond for 6-8 weeks until stocking material - summer fry - has been obtained.
  • Controlled natural reproduction. Smaller earthen ponds are used (storage or wintering ponds) with surface areas of approximately 500 to 1 500 m² and depths of 1.5-2.0 m. Spawning nests (60 × 60 cm) are placed on pond bottoms 3-5 m apart. The substrate can be turf, sea grass, rice straw, or alder or willow roots. There should be 10 percent more nests than males. There should also be 10 percent more males than females. Nests with eggs are transported to a hatchery or another pond.
  • Reproduction in lake cages. In Finland, cylindrical floating cages with a (diameter 2.0 m; depth 2.0 m) are used. In Poland pens are cubic with sides measuring 2.0 m. Spawning substrate is placed in the cages (as above) along with spawning sets. The females are injected hormonally, usually with human chorionic gonadotropin (hCG) or carp pituitary extract (CPE). Males usually do not require hormonal stimulation. Nests with eggs are moved to ponds or hatcheries.
  • Artificial reproduction. After being transported to the hatchery, the fish are sorted by sex, and females by their degree of maturity. A catheter is used to sample eggs, which are then fixed in Serra's fixative to assess the position of the nucleus (on a 4-degree scale). Females are stimulated with hormone injections (hCG – 200-600 IU/kg BW or CPE – 2-5 mg/kg BW). Males receive half of the dose applied to females. After the sex products are obtained, the eggs are dry fertilized (1-2 ml semen/100 g eggs). Adhesiveness is removed from the eggs by rinsing them in an aqueous solution of tannin at a concentration of 0.5-1.0 g/litre water, bath time 2-5 min. Enzymatic preparations can also be applied – 0.5 percent aqueous protease solution (2 min for adhesive removal). Eggs are incubated in Weiss jars. Prophylactic baths are used to prevent the development of mould (e.g. 100 ppm formalin for 5 min).
  • Out-of-season reproduction. This is the newest method, and it is used at hatcheries equipped with RAS and cooling systems for reducing water temperatures. Fish are stimulated environmentally (temperature and photoperiod). Thermal stimulation lasts for 18 weeks – 8 weeks cooling phase (20-8 °C), 6 weeks chilling phase (8-4-8 °C), 4 weeks warming phase (8-12 °C). Photoperiod stimulation is used exclusively during the warming phase when it is changed from 8L:16D to 14L:10D. After this period, hormonal stimulation is used (see above). This permits obtaining sex products several months before the natural spawning period.

Hatchery Production

Two types of hatchery production are employed, an extensive/intensive method and a solely intensive method. Hatchery-reared seed is not normally used for producing juveniles to be reared in ponds.

Extensive/intensive method (ponds ? RAS)

Larvae are reared in earthen ponds in which natural or semi-natural pike-perch reproduction has previously been conducted. The optimal surface area of rearing ponds for larvae is 0.5-2.0 ha, with a mean depth of 1.2-1.5 m. Organic fertilization is applied - manure (5-8 tonnes/ha). Depending on atmospheric conditions, the fry are collected 6-8 weeks after the larvae hatch. One ha of pond surface area produces 50-250 kg of summer fry with a mean BW of 0.20 to 0.70 g. In order to harvest the summer (and fall) fry produced in earthen ponds, it is necessary to drain the water from the ponds. The fish crowd into harvesting cages placed behind the outlet box. Fry can also be harvested using floating harvesting pens placed in front of the outlet box. The fry are then transported in plastic bags with oxygenated water (30 litres water + 30 litres oxygen). From 600 to 3 000 summer fry are stocked per bag, depending on fish size, water temperature and transport time. Oxygenated transport tanks can handle from 18 000 fry/m³ (transport time 15 h, water temperature 20 °C) to 120 000/m³ (transport time 2 h, water temperature 15 °C).

The fry are stocked into a RAS that comprises circulation tanks with volumes of 1.0-3.0 m³ (tank depth >40 cm; optimum 70-100 cm). Light intensity measured at the rearing tank surface should not exceed 50 lux. The optimum temperature for rearing fry is 22 °C. The initial stocking density is 5-8 fry/litre (1.5-3.0 kg/m³). The fish are fed commercial salmonid feeds with a high protein content (>50 percent) and a fat content of 12-18 percent. In the initial phase of rearing (adaptation period to new feed) the particle size of the feed is 0.4-0.7 mm. Feed is provided ad libitum for 16-24 h per day. The daily feed ration in the first week is 15-17 percent of biomass. The adaptation period is 2 to 3 weeks. Survival during this period is 50-90 percent. Cannibalism is a factor that can limit the efficacy of this method. The fish must initially be sorted precisely. They are then sorted again after 3-4 weeks of rearing. Typically, the total length of the hatchery rearing phase is 8-12 weeks.

Intensive method (RAS)

The techniques used for rearing pike-perch larva intensely in RAS is more akin to those employed for marine than for freshwater species in both character and difficulty. There are three critical periods that impact the final success of intense rearing:

  • Transformation to exogenous feeding. Larval pike-perch are tiny and after hatching their alimentary tract is a simple, anatomically undifferentiated tube. The stomach and pyloric caecae do not form until about two weeks following hatching (TL 8-13 mm; 210-273 °D). The first exogenous food must be of an adequately small size
  • Inflation of swim bladder. Pike-perch are physoclistic (no connection between the alimentary canal and the swim bladder). The brief swim bladder inflation period is between 4-11 days post hatch (DPH) (84-231 °D). If the swim bladder fails to inflate during this period, normal development of the anterior segment of the larval alimentary tract renders this impossible.
  • Period of intensified cannibalism. The first cannibals appear very early when the larvae reach TL 10-14 mm (256-322 °D) and intensify after the fish have grown to TL 20 mm.

Larvae are reared in 0.5-1.5 m³ circulation tanks. For the first two weeks, a spray system is used to break the surface tension of the water (this provides larvae access to atmospheric air and allows them to fill their swim bladders). Initial stocking density ranges from 20 to 50/litre and the water temperature is 20 °C. Two methods are used for the initial feeding of larval pike-perch:

  • Method 1. In this method both commercial feed and Artemia nauplii are fed to the larval pike-perch during the first 14 days. During this period brine shrimp are provided at ~200-300 nauplii/fish/day, given in a minimum of 3 portions/day. After 14 days, the larvae are fed commercial feed exclusively. The granule size in the first 10-14 days of rearing is 0.1-0.3 mm, while in the third and fourth weeks it is 0.2-0.4 and 0.3-0.5 mm respectively. The feed has a high protein content (55-62 percent) and a lipid content of 10-16 percent. Feed is delivered ad libitum 24 h/day with an automatic feeder.
  • Method 2. In this method larval pike-perch are fed brine shrimp exclusively for the first 14 days at a rate of ~500 nauplii/fish/day, delivered every 1-1.5 h for a minimum of 16 hours per day. After 2 weeks the larvae are trained to accept commercial feed; the period required to do this is usually 3 days. After 3-4 weeks of rearing (BW >50 mg) the fish are sorted, and the fish with inflated swim bladders (ISB) are separated from those with non-inflated swim bladders (NSB). This is carried out in an aqueous solution of sodium chloride and etomidate at a dosage of 10 g sodium and 1 ml of etomidate/litre of water. After the fish have been anaesthetized in this solution, the individuals with ISB rise to the surface, while fish with NSB sink to the bottom. After this procedure, only individuals of good biological quality (ISB individuals) are retained for further rearing.

Rearing Fingerlings

Ponds are stocked with pike-perch spawners (natural or semi-natural pike-perch reproduction), and the hatch is reared for several weeks.

Ponds (0.5 – 2.0 ha) may also be stocked with larvae (200 000-500 000/ha) obtained from hatcheries. 10-14 days before stocking larvae the ponds are filled to half their depth (40 percent volume), with the remaining water added 10 to 14 days after stocking. The ponds are fertilized with manure at the same time as they are filled with water (4-8 tonnes/ha). Rearing lasts from 6-8 weeks, survival is 15-40 percent, and production is 50-250 kg/ha of juveniles with a mean BW of 0.2-0.7 g.

Nursery

Nursery rearing in RAS systems

Juvenile pike-perch (BW 0.2-10 g) are reared in 2-5 m³ RAS tanks. Water temperature ranges from 22-24 °C. The stocking density is limited to 10/litre. The daily feed ration is 12-10 percent of biomass. During this phase, stocks are graded every 2 to 4 weeks. Light intensity is reduced from the hatchery level to 20-30 lux at the water surface. The stocking density (BW >3 g) is reduced from hatchery levels to 6 individuals/litre. The biomass of the fish observed with BW 3-10 g does not exceed 10 kg/m³. Juveniles destined for intensive on-growing are retained until they reach a minimum of 15 g BW. Typically, the nursery phase lasts 8-10 weeks.

Nursery in Ponds

Polyculture with carp

Ponds are used for less intensive carp production (500-1 000 kg/ha). The ponds are stocked with pike-perch spawners (2 males + 1-1.5 females/ha), fertilized eggs (0.5-1.0 nest/ha), hatched (2 000-10 000/ha) or summer fry (2 000–5 000/ ha). Juveniles are harvested in the fall with carp. The production is 20-25 kg/ha of fall fry with a mean BW of 10-15 g. Production is characterized by high variability in subsequent years.

Monoculture

This method is rarely used but is being developed. Ponds (0.2-2.0 ha) are stocked with 4 000-6 000/ha summer fry (BW - 0.2-0.5 g). The ponds are fertilized with manure (20 tonnes/ha) two weeks before stocking. The ponds are also stocked with fodder fish species (spawners, eggs and hatchlings of roach (Rutilus rutilus), tench (Tinca tinca) and gudgeon (Gobio gobio).

(Video) Pike Perch Aquaculture 2017

Ongrowing Techniques

Ongrowing in recirculation systems

This method is still under development; fewer than ten facilities in Europe are currently using it. Juveniles of 15-30 g are stocked. In the initial stages (BW 15-100 g), when 2-5 m³ tanks are used, the stock is maintained at 10-30 kg/m³. Larger tanks (20-30 m³) are used for the final stage, in which the fish are reared to >1 kg at a maximum stocking density of 80 kg/m³. The fish are sorted 2 or 3 times, firstly at 100-150 g, secondly at 200-250 g, and thirdly when the fish attain 500-600 g. Fish of >1 kg can be obtained after about 15-18 months of on-growing in RAS.

RAS grow-out feeds are high in protein (42-50 percent) and low in lipid (8-14 percent). In the early stages (15-80 g), feed particle size is 2.0-2.5 mm, while in the final stage (1.0-2.0 kg) it is 9.0-13.0 mm. Feed is delivered using automatic feeders at least three times per day. Typically FCR does not exceed 1.0:1.0 (BW 1.0 kg).

The thermal optimum for pike-perch growth is about 27-28 °C but fast growth rates are already noted at 23 °C. Oxygen saturation at the inflow is maintained at 100-120 percent, while at the outflow it should not fall below 50 percent. pH should be 6.5-8.2. Typical levels of total ammonia nitrogen (TAN) and nitrite (NO2-N) measured at the outflow of the rearing tanks do not exceed 0.40 mg TAN/litre and 0.15 mg NO2-N/llitre.

Ongrowing in Ponds

Pike-perch is reared as a so-called supplementary fish in polyculture with carp. A minimal stocking rate is normally used, namely 20-100 individuals/ha of fish aged 3+. After 3-4 years, the fish achieve body weights of 400-1 000 g and the production of market-sized pike-perch can be as high as 5-50 kg/ha.

Feed Supply

The pike-perch that are reared in ponds feed on zooplankton, zoobenthos, and fodder fish species.

Those reared in intensive (RAS) culture are fed salmon (Salmo salar), rainbow trout (Oncorhynchus mykiss), and sea bass (Dicentrarchus labrax) feeds produced by commercial feed manufacturers. Sinking feed is used, which is delivered with automatic band feeders either several times daily or continuously. Recently, two or three commercial feed manufacturers have begun to produce feed specifically formulated feed for pike-perch but the nutritional requirements of pike-perch are not well understood; feed formulae are currently being developed and perfected.

Harvesting Techniques

Market-sized pike-perch and carp reared in earthen grow-out ponds are caught in the fall by draining the ponds. Fish weighing 1-2 kg (usually ~1.5 kg) are produced in RAS. However, restaurants prefer fish weighing between 2-4 kg, for which they pay higher prices. Before harvesting, fish are starved for 2-3 days.

Handling and Processing

Pike-perch are susceptible to stress and sensitive to manipulations. The use of anaesthetics is recommended, for example during artificial reproduction. After manipulation, such as grading, it is recommended that the fish are bathed in a sodium chloride solution as a stress reduction measure (bath time 1 h in a 0.5-1.0 percent NaCl solution).

Slaughter yields at various stages of processing are as follows: gutted fish (84-88 percent BW); headed gutted carcass (63-66 percent BW); fillet with skin (54-57 percent BW), fillet without skin (48-51 percent). 100 g of skinned fillet of wild-caught pike-perch from natural conditions contains 215 mg of polyunsaturated fatty acids (PUFA), while the PUFA level of pike-perch cultured in RAS is 730 mg. The content of essential fatty acids - eicosapentaenoic (EPA, 20:5 n-3) and docosahexaenoic (DHA, 20:6 n-3) are 32 and 103 mg in wild-caught pike-perch and 140 and 370 mg in cultured pike-perch respectively. The ratio of n-3PUFA/n-6 PUFA ranges from 3.2 to 4.4.

Production Costs

The following contribute to the costs of producing 9-10 g fingerlings in RAS (initially stocked with 0.2-0.5 g summer fry from earthen ponds): labour 40 percent, energy 28 percent, feed 12 percent, fry 20 percent.

The cost of producing 10 g fingerlings in RAS (2009) is ~ USD 0.6/individual. Labour costs are 43 percent of the overall costs, depreciation 12 percent, and feed 7-10 percent. The way to lower costs is to increase the scale of production and to improve culture efficiency, especially survival. The cost of producing marketable pike-perch (final BW 1.5 kg) is estimated to be USD 6.2-7.0/kg.

Diseases and Control Measures

In some cases antibiotics and other pharmaceuticals have been used in treatment but their inclusion in this table does not imply an FAO recommendation.
DiseaseAgentTypeSyndromeMeasures
Bacterial infectionsAeromonas hydrophilaBacteriumIrregular reddened skin ulcerations; anorexiaImproved water quality; NaCl (1%); antibacterial drugs in feed
Fungal infectionsSaprolegnia spp.FungiWhite cottony or hairy patches on eggs or fish (skin, fins, gills)Formaldehyde; NaCl (1-2%)
Parasitic infectionsTrichodina spp.CiliatesIncreased mucus production; respiratory distress; swimming at water surfaceImproved water quality; NaCl (1-2%)
Chilodonella spp.CiliatesIncreased mucus production; rapid opercula movements; swimming at water surfaceImproved water quality; NaCl (1-2%)
Ichthyophthirius multifilisProtozoanBody (skin, fin, opercula) covered with white spores; sick fish keep rubbing against hard surfaceChloramina T
Ichthyobodo necatorProtozoanRubbing skin on surfaces; raised scales; rapid opercula movementsImproved water quality; NaCl (1-2%)
Gyrodactylus spp.Monogean trematodesWhite patches on gills & operculaImproved water quality; Chloramina T; NaCl (1-2%)

Suppliers of pathology expertise

Government and scientific institutions provide services to aid in diagnosing and treating fish diseases. Assistance can be obtained by contacting local institutions responsible for providing veterinary supervision for fish health in aquaculture facilities.

Statistics

Production Statistics

In 2009, annual aquaculture production of pike-perch exceeded 100 tonnes in only three countries - Denmark, Tunisia and Ukraine. Total pike-perch production in aquaculture (653 tonnes) in 2009 was less than 5 percent of the level caught in open waters (14 739 tonnes).

(Video) Pikperch Aquaculture

Global Aquaculture Production of Sander Lucioperca
(FAO Fishery Statistic)

How to Farm Pike-Perch (6)

Market and Trade

The pike-perch available on the market are usually caught by fishers working open waters. Kazakhstan, the Russian Federation, Finland, and Turkey made the largest catches of this species in 2009. Kazakhstan, the Russian Federation and Finland were the largest exporters. In 2008, total catches were about 20 000 tonnes, of which 9 811 tonnes were caught in Kazakhstan. However, the total catch reported in 2009 was 14 739 tonnes, of which 4 099 tonnes came from Kazakhstan and 3 011 tonnes from the Russian Federation. As is evidenced by these data, the output of capture fisheries of this species is characterized by significant fluctuations, and in recent years there has been a decreasing trend. The main importers of pike-perch include countries of Western Europe, such as Germany and France.

Thanks to its low fat content (usually 1-2 percent) and highly assimilable protein, pike-perch meat is highly valued by dieticians. Pike-perch is usually sold frozen as gutted whole fish, fillets with skin or skinned fillets. The fillets are usually sold in the following weight categories: 120-170 g, 170-230 g, 230-300 g, 500-800 g, >800 g. This species is less frequently sold fresh, e.g. whole fish, whole gutted fish, fillets with skin and skinned fillets. There are two types sold: pike-perch D (>1.0 kg) and pike-perch S (TL >45 cm, BW
Wholesale prices for pike-perch fluctuate significantly but usually range from USD 5.6-12.5/kg (whole fish) with a mean of about ~USD 8.3/kg. In some countries, such as Germany and France, prices can be as high as USD 22.2/kg.

Status and Trends

Recently, this species has been the subject of intense scientific study in both Central (Czech Republic, Hungary, Poland) and Western (Belgium, Finland, France, Germany) Europe. Research is focused on developing methods for intense pike-perch aquaculture production, mainly in RAS. Methods for artificial reproduction, including out-of-season spawning, are being refined and improved. One area of research concerns the use of cultured spawners held in RAS for reproduction, and focus is being placed on issues such as improving the quality of sex products obtained from these spawners. One of the bottlenecks in this field remains the low effectiveness and high costs of rearing larval pike-perch in RAS. Investigations conducted on this issue have included both feeding and environmental experiments. The nutritional requirements of juvenile pike-perch (quality and quantity of feed) have been largely identified.

The expansion of pike-perch culture depends on the development of culture in RAS; little or no expansion in the farming of pike-perch in ponds is anticipated. This is supported by increasing consumer demand, concomitant with decreasing catches of this species in open waters. One of the limiting factors is the possibility of producing sufficient quantities of juveniles. It is essential to improve methods for artificial reproduction and rearing larval pike-perch in RAS. Research addressing a variety of aspects related to pike-perch culture is required to:

  • Develop disease prevention and treatment strategies.
  • Perform genetic and selection tests.
  • Determine the effects of domesticating this species.

Priority should be given to market studies aimed at identifying the needs and preferences of consumers. Good results have been obtained by consortia of researchers and entrepreneurs. One example is the project COOP 2005 – Luciopercimprove, which is financed by the European Commission.

Main Issues

Producing spawning material and commercial fish in earthen ponds, generally in polyculture with carp, is considered to be safe for the environment. This type of culture is extensive and is carried out primarily in countries where pike-perch is indigenous. Pike-perch pond culture can potentially have a negative impact on the indigenous fish population when it conducted in countries that lie outside the natural area of occurrence of this species (e.g. Tunisia).

Culturing pike-perch in RAS does not have a significant negative impact on the environment because it is conducted in the isolated environment of facilities that are mostly supplied with water from wells. The risk of fish escapes is eliminated, as are those of disease transmission. Cultivating and maintaining broodstocks in RAS frees this type of pike-perch production from the necessity of catching spawners in the wild.

Responsible Aquaculture Practices

Pike-perch aquaculture should meet the guidelines set forth in Article 9 of the FAO Code of Conduct for Responsible Fisheries, which refers primarily to the procedures and practices associated with monitoring fish health, prevention of the spread of disease, ensuring products of high nutritional value, and maintaining genetic diversity.

References

Bibliography

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(Video) AquaPri's state-of-the-art Zander farm, located in Southern Denmark

Molnár, T., Szabó, A., Szabó, G., Szabó, C. && Hancz, C. 2006. Effect of different dietary fat content and fat type on the growth and body composition of intensively reared pikeperch Sander lucioperca (L.). Aquaculture Nutrition, 12:173-182.

Müller-Belecke, A. && Zienert, S. 2008. Out-of-season spawning of pike perch (Sander lucioperca L.) without the need for hormonal treatments. Aquaculture Research, 39:279-1285.

Nyina-Wamwiza, L., Xu, X.L., Blanchard, G. && Kestemont, P. 2005. Effect of dietary protein, lipid and carbohydrate ratio on growth, feed efficiency and body composition of pikeperch Sander lucioperca fingerlings. Aquaculture Research, 36:486-492.

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Schulz, C., Böhm, M., Wirth, M. && Rennert, B. 2007. Effect of dietary protein on growth, feed conversion, body composition and survival of pike perch fingerlings. Aquaculture Nutrition, 13:373-380.

Schulz, C., Huber, M., Ogunji, J. & Rennert, B. 2008. Effects of varying dietary protein to lipid ratios on growth performance and body composition of juvenile pike perch (Sander lucioperca). Aquaculture Nutrition, 14:166-173.

Siwicki, A.K., Zak??, Z., Fuller, J.C. Jr., Nissen, S., Trapkowska, S., G??bski, E., Kowalska, A., Kazu?, K. & Terech-Majewska, E. 2006. Influence of ?-hydroxy-?-methylbutyrate on nonspecific humoral defence mechanisms and protection against furunculosis in pikeperch (Sander lucioperca). Aquaculture Research, 37:127-131.

Steffens, W., Geldhauser, F., Gerstner, P. & Hilge, V. 1996. German experiences in the propagation and rearing of fingerling pikeperch (Stizostedion lucioperca). Annales Zoologici Fennici, 33:627-634.

Szkudlarek, M. & Zak??, Z. 2007. Effect of stocking density on survival and growth performance of pikeperch, Sander lucioperca (L.), larvae under controlled conditions. Aquaculture International, 15:67-81.

Verreth, J. & Kleyn, K. 1987. The effect of biomanipulation of the zooplankton on growth, feeding and survival of pikeperch (Stizostedion lucioperca) in nursing ponds. Journal of Applied Ichthyology, 3:13 - 23.

Wang, N., Teletchea, F., Kestemont, P., Milla, S. & Fontaine, P. 2010. Photothermal control of the reproductive cycle in temperate fishes. Reviews in Aquaculture, 2:209-222.

Wang, N., Xu, X. & Kestemont, P. 2009. Effect of temperature and feeding frequency on growth performances, feed efficiency and body composition of pikeperch juveniles (Sander lucioperca). Aquaculture, 289:70-73.

Zak??, Z. 1999. The effect of body size and water temperature on the results of intensive rearing of pike-perch, Stizostedion lucioperca (L.) fry under controlled conditions. Archives of Polish Fisheries, 7:187-199.

Zak??, Z. 2007. Out-of-season spawning of cultured pikeperch (Sander lucioperca (L.)). Aquaculture Research, 38:1419-1427.

Zak??, Z. & Demska-Zak??, K. 2009. Controlled reproduction of pikeperch Sander lucioperca (L.): a review. Archives of Polish Fisheries, 17:153-170.

Zak??, Z., Kowalska, A., Demska-Zak??, K., Jeney, G. & Jeney, Z. 2008. Effect of two medicinal herbs (Astragalus radix and Lonicera japonica) on growth performance and body composition of juvenile pikeperch [Sander lucioperca (L.)]. Aquaculture Research, 39:1149-1160.

Zak??, Z., Przyby?, A., Wo?niak, M., Szczepkowski, M. & Mazurkiewicz, J. 2004. Growth performance of juvenile pikeperch, Sander lucioperca (L.) fed graded levels of dietary lipids. Czech Journal of Animal Science, 49:156-163.

Zak??, Z. & Szczepkowski, M. 2004. Induction of out-of-season spawning of pikeperch, Sander lucioperca (L.). Aquaculture International, 12:11-18.

October 2012

FAQs

How do you farm pike? ›

Fishing Planet - Michigan - Pike Farm - Quick Money - YouTube

How do you raise perch? ›

How To Grow Jumbo Perch - YouTube

What is the maximum size for the whole pike perch? ›

Pikeperch (maximum length is 90 cm) can eat fish up to 30 cm in length (3,4). Although pikeperch are known as a typical freshwater fish, they can sometimes be encountered in waters between freshwater and saltwater environments (5).

Can perch be farmed? ›

Yellow perch are farmed in ponds and indoor systems where fish culturists can monitor and manage the water quality, fish health, and control inputs such as feed. By providing quality feed and a healthy environment, farmers can ensure that the yellow perch they produce are safe to eat.

How do you catch unique northern pike? ›

Fishing Planet Unique Northern Pike Guide 2020 - Saint-Croix ... - YouTube

How fast do perch grow? ›

Perch are not a fast growing fish. Under normal conditions it takes about three years for them to reach 7-8 inches long and attract significant interest from anglers. In four years they may grow to 9-11 inches, and perhaps beyond a foot in six or seven years.

Can you put perch in a pond? ›

Perch can be kept in ponds as long as their needs are met. Perch live best in water at least twelve feet deep, and around 70 to 75°F. Perch are predators, and are best kept alone in small ponds and fed things like insects, crayfish, and snails. Perch do best in large ponds.

Can you breed perch in a tank? ›

Perch are bred in hatchery tanks producing large numbers of eggs that will hatch 24-28 hours after being laid.

What is the difference between perch and pike perch? ›

Also known as zander, pike-perch is similar to a long and thin perch, but tends to be darker in color with a clear lateral line and without the red fins. The top side is dark. A pike-perch can weigh up to 15 kg but fish weighing up to 3 kg are most common, whether on the end of a rod or at the fishmongers.

How old is a 40 inch pike? ›

Fish Age-Size and Male/Female Ratio Chart
Fish AgeLengthWeight
1939"-99cm18lb
2040"-101cm21lb
2141.5"-105cm23lb
2243"-109cm25lb
20 more rows

How fast do pike grow? ›

Northern pike grow most rapidly during the first two years of life, although the rate of growth will vary from lake to lake. Males may mature in 1 year, always in 2, with an average length of 16 to 18 inches; females may mature in 2 years, always in 3, at about 20 to 22 inches (Fig.

In the early twentieth century, production began of pike-perch stocking material (summer and fall fry) in earthen ponds (natural spawning) for stocking open waters.. Pike-perch are regarded as having three trophic phases: plankton phase until fish are TL 13-30 mm; mixed feed stage (invertebrate fauna + fish) until fish are TL 24-70 mm; and predatory phase (feed comprised exclusively of fish) from TL 34-80 mm.. One ha of pond surface area produces 50-250 kg of summer fry with a mean BW of 0.20 to 0.70 g. In order to harvest the summer (and fall) fry produced in earthen ponds, it is necessary to drain the water from the ponds.. Rearing Fingerlings Ponds are stocked with pike-perch spawners (natural or semi-natural pike-perch reproduction), and the hatch is reared for several weeks.. Feed Supply The pike-perch that are reared in ponds feed on zooplankton, zoobenthos, and fodder fish species.. Recently, two or three commercial feed manufacturers have begun to produce feed specifically formulated feed for pike-perch but the nutritional requirements of pike-perch are not well understood; feed formulae are currently being developed and perfected.. Slaughter yields at various stages of processing are as follows: gutted fish (84-88 percent BW); headed gutted carcass (63-66 percent BW); fillet with skin (54-57 percent BW), fillet without skin (48-51 percent).. Production Costs The following contribute to the costs of producing 9-10 g fingerlings in RAS (initially stocked with 0.2-0.5 g summer fry from earthen ponds): labour 40 percent, energy 28 percent, feed 12 percent, fry 20 percent.. Diseases and Control Measures In some cases antibiotics and other pharmaceuticals have been used in treatment but their inclusion in this table does not imply an FAO recommendation.DiseaseAgentTypeSyndromeMeasuresBacterial infectionsAeromonas hydrophilaBacteriumIrregular reddened skin ulcerations; anorexiaImproved water quality; NaCl (1%); antibacterial drugs in feedFungal infectionsSaprolegnia spp.FungiWhite cottony or hairy patches on eggs or fish (skin, fins, gills)Formaldehyde; NaCl (1-2%)Parasitic infectionsTrichodina spp.CiliatesIncreased mucus production; respiratory distress; swimming at water surfaceImproved water quality; NaCl (1-2%)Chilodonella spp.CiliatesIncreased mucus production; rapid opercula movements; swimming at water surfaceImproved water quality; NaCl (1-2%)Ichthyophthirius multifilisProtozoanBody (skin, fin, opercula) covered with white spores; sick fish keep rubbing against hard surfaceChloramina TIchthyobodo necatorProtozoanRubbing skin on surfaces; raised scales; rapid opercula movementsImproved water quality; NaCl (1-2%)Gyrodactylus spp.Monogean trematodesWhite patches on gills & operculaImproved water quality; Chloramina T; NaCl (1-2%) Suppliers of pathology expertise. There are two types sold: pike-perch D (>1.0 kg) and pike-perch S (TL >45 cm, BW Wholesale prices for pike-perch fluctuate significantly but usually range from USD 5.6-12.5/kg (whole fish) with a mean of about ~USD 8.3/kg.

The weight of the Float can vary depending on the water type: 2-3 g float can be more than enough for a lake, but you will need to scale up for rivers.. If perch are there, they will take your bait in no time!. Fishing for pike is a big level up from perch fishing.. If yes, there is most likely a pike under it!. Well, there ought to be some pikes under them!. Now, the lures.

A perch is a deep-bodied fresh water fish of the genus perca and family Percidae .. Perch refers solely to fish species that belong to the family Percidae.. How to identify a perch fish.. The first and larger fin is strong and sharp while the second fin is soft.. These three species are commonly referred to as “true” perch fish.. Other types of perch from the family Percidae are Zander, Walleye, Chinese Perch, Barramundi and the Nile perch.. The yellow perch as the name suggests golden yellow in color with red pelvic and anal fins the older it gets the more yellow it becomes the size of the yellow page varies between different bodies of water.. European perch photoThe European perch is also commonly known as the common perch.. The two dorsal fins of the European perch are clearly separated from one another.. Balkhas perch photoThe Balkhash perch ( Perca schrenkii ) is also commonly known as the pike perch.. It has a large mouth with very sharp teeth.. The Mandarin fish grow to about 20 cm and weigh about 160 to 250 g.. The body of a Nile perch is deep and compressed characterized by small and rough scales.. If you got this far, now you know about the 8 types of perch found in the Percidae family.

The benefit of farming pikeperch in recirculation systems is that several possible negative impacts on the environment are effectively limited.. As with most farmed fish, the stunning and killing of the fish is not happening in a humane way yet.. In The Netherlands there is, as part of the Duurzaam Snoekbaarscollectief (Sustainable Pikeperch Collective) research done on points of improvement in the area of water quality, preventing diseases, and humane stunning and killing methods.. Pikeperch are predatory fish and the feed of the fish still has a high content of fish meal and fish oil.. There is more than 2 kg of wild fish needed for growing 1 kg of pikeperch.. The fishing pressure on pikeperch is high in the inland waters of The Netherlands, especially in the IJsselmeer.. There are too many professional fishermen that fish on pikeperch.. The fishing methods are selective, without bycatch or harmful effects on the bottom.. The fishing methods are selective, with little bycatch and no harmful effect on the bottom.. Lees meer General Perchids (Perciformes) is by far the largest family of fishes and comprise more than 41% of all vertebrate fish.. Pikeperch is a lean predatory fish that can reach a maximum length of 100 cm and a maximum weigth of 20kg.

Although global aquaculture production has doubled every decade over the past 40 years, central European aquaculture has stagnated with few exceptions, mainly in marine species.. In contrast to the decreasing fisheries landings, pike perch aquaculture production increased over the last decade (Fig.. Still, the induction of final maturation and subsequent spawning are not the most frequent reproductive dysfunctions encountered during closed-cycle aquaculture of pike perch.. As in several other species, the initiation of gonad maturation (puberty) is often impeded, and gonad development can stagnate at an early stage.. Thus, in captivity, reproductive dysfunction is reflected in females’ estradiol sex steroid hormone and males’ 11-ketotestosterone hormone – leading to a stagnation of gonad maturation in both sexes and impairing the recruitment of breeders.. External factors, such as photoperiod and temperature, are integrated at the level of the brain, initiating a cascade of hormones via the pituitary to the gonad, finally inducing the synthesis of sexual steroids that initiate maturation of the testis and the ovary.. For example, in female perch kept at temperatures of 6, 9, 12, 15 or 23 degrees-C under a photoperiod of 12 hours light and 12 hours dark over a 20-week period, synthesis of estradiol was significantly inhibited at 23 degrees-C, whereas the highest estradiol concentrations were detected at 12 degrees-C (Fig.. 2: Plasma concentrations of estradiol in females at different temperatures.Correspondingly, histology of the gonads revealed that maturation initiated earlier at 12 degrees C than at 9 or 15 degrees-C, whereas at 23 degrees-C, maturation stagnated at a previtellogenic stage.. In pike perch, relative gonad size sharply rises at the onset of gonad maturation from approximately 0.4 percent in males and slightly higher in females.. Obviously, temperature control of gonad maturation is only economically feasible in sophisticated recirculation aquaculture systems.. Temperature protocols are key to year-round production of pike perch, which could provide a long-term competitive advantage, compensate higher investment and running costs and ultimately promote recirculation technology for pike perch aquaculture.

monofilament line Fishing Hook For small leeches and minnows: hook size #8 and #6 For larger minnows for ringed perch: hook size #6 and #4 Perch Jigs Curly tail jigs, soft plastic jigs, 1″-2″ in length Fishing Rod A dropshot rod 6ft.. in length Jig Heads 1/16-ounce jig heads (standard), 1/18-ounce jig heads (heavier), 1/32-ounce jig heads (lighter) Artificial Lures Inline spinners, crankbaits, and jigs, in yellow/white color combinations Perch Fishing Rigs Texas rig , drop shot rig , or spreader rigs with bullet weights This table shows the key equipment needed for Perch fishing. Seasoned perch anglers use the same tactics for catching big yellow perch off the bottom.. Don’t make the same mistake!. Want to catch yellow perch this summer?. When fishing around the reeds, you want to use a float rig with natural bait.. Weeds and reeds give lake perch a safe place to hide and escape vicious walleyes.. Fall is a good time to give perch fish bits and minnows rather than an artificial lure.. Anything you can fish over the bottom can be used as baits in perch fishing.

Herds of huge predators migrate seasonally to the mouths of the rivers flowing into the lake, following moving in the water feeding the fish or obeying an irresistible instinct of reproduction.. Imitating such a large walleye prey, large bait when fishing becomes predominant at the crossroads of pike and their victims - in the mouths of rivers, fine feed and fishing zones.. Trolling on floating baits can be fished external border of seaweed, and spinning to make casts to the internal border, using large floating wobblers.. For coastal fishing used space on the edges or corners of the piers, walking trails along the coast or stone mounds, quay walls, bridges, and other public buildings or fences forming a change in the flow, which is concentrated and where the fish feed definitely comes perch.. In shallow rivers to avoid the snags of driftwood floating crank baits help on deep - more productive will be sinking or diving lures, quickly reaching the depth and sometimes even on the bottom and stones.. Flocks forage fish often hang along the current border breaks or quiet "pockets" at the various obstacles and just perch here and rises from the bottom to catch the lure.. To catch all but the largest of lures are suitable spinning rod class moderate length 2.1-2.25 m, which together with the line from the breaking load of 3.5 to 4.5 kg ensure an effective combination of sufficiently long casting, good control bait and pull ashore a big fish.. After fishing on the pit and neighboring areas up and down the river crosses the river and fished the opposite shore or space at the wall of the pier on the way downstream.

So, choose your favorite recipe, get the ingredients ready, and enjoy some seriously good perch dishes.. Then, it’s just a matter of baking the fish in the oven until it’s golden brown and cooked through.. Baked parmesan perch is one of my favorite dishes to make when I want something delicious.. It only takes 20 minutes to make this tasty dish.. Cook them for just a few minutes until they turn crispy and perfectly delicious.. To make this pan-fried lake perch recipe, start by preheating a large skillet over medium heat.. So what better way to enjoy this delicious fish than in a classic perch chowder?. Add the potatoes and season with salt.. Plus, it’s a great way to get those healthy omega-3 fatty acids without heating up the kitchen.. Grill the fish for 2-3 minutes on each size and serve it accordingly.. Then, place a couple of lemon slices on each perch fillet.. Simply coat your fish fillets in a mixture of spices and flour, then fry them in hot oil until they are golden brown.. Prepare the slaw by mixing mayo, hot pepper sauce, garlic powder, and black pepper.

So, while sized Pike will certainly eat Perch, they may not be the best bait for targeting these fish.. Pike are known to eat minnows, but they are not the only fish enjoying this bait type.. While Pike will eat smaller fish, they are not the only predators in the water.. Large Pike is also known to be eaten by other predators, such as muskies!. So, does Pike eat Perch?

But the Chinese for a long time could not understand the taste and value of this fish, and after catching it, they threw this fish out of their nets back into the reservoir.. This spieces is a predatory fish, belongs to the class of Ray-finned fish, the order Perch-like, the Perch family.. In appearance, the pike perch is of decent size, some individuals grow more than one meter long, while the pike perch’s weight can be 20 kg, but on average, the fish’s weight varies from 10 to 15 kg.. The scales of the fish completely cover the long body of the fish; on the back there is a high sharp fin and an elongated flat head.. There are not so many fish species in nature; there are about five: common, light-feather, sandy, sea pike perch, and bersh (Volga pike perch).. Smoked pike perch is a fish that has not undergone proper heat treatment.. Pathogenic bacteria can remain in it.Dried and pickled fish is another danger to the human body since it can contain the smallest larvae of dangerous parasites that can cause serious diseases.Another danger is stale fish.. As you can see, pike perch is a healthy and safe fish.. Sea pike perch is slightly rougher than common, and Volga pike perch is bonier.Fish meat is nutritious and, at the same time, low in calories.. This Fish is perfect for preparing cutlets, zrazy, rolls, puddings, pies, soups, fish soup, snacks, salads.. The famous Astrakhan fish soup is cooked from the heads of pike perch, carp and catfish.. Pike perch – 1 kg Sour cream – 120 g Bulb onions – 2 pcs.. So, we need the fish itself, sour cream, onions, and cheese.. If your pike perch is small, you can cook it whole.. We put a baking sheet or baking dish with this fish in sour cream in an oven preheated to 190 ° C. I recommend not to put it on the upper level.

Small yellow perch are a sought after prey fish of almost every game fish that grows bigger than them, including bass, catfish, walleye, pike, and muskie.. It’s legal to use perch as bait in some states, but not others.. This is because some states categorically prohibit the use of game fish as bait, while others allow it under certain conditions.. If you are allowed to use them, perch are an excellent bait for big catfish, pike, muskie, and even bass.. In other words, you need to make sure that you are allowed to catch fish in one lake, and then use them as bait in a different lake, or if you can only use them if they are caught in the same lake.. The best way to find out what’s currently allowed in your state is by looking up the website of your state fish and wildlife management agency.. All three of these can make formidable baits for large game fish, and if you can make one of these options work for you, that may even put you ahead of other anglers using more conventional methods.. While small ones around 2” to 3” can be a great live bait for channel catfish, try using the 6” to 8” size instead if you want to target big catfish specifically.. Just like for catfish, perch are one of the secret weapons for catching big pike.. If you use a 5”-6” fish as bait, that’ll probably catch you some decent sized pike, but if you specifically want to target trophy sized pike, increase the size to 8 inches, or even bigger.. Keep in mind that the preferred prey fish of pike can vary from lake to lake.. Bass have been known to eat almost anything, and a popular method for catching big largemouth bass is by using live bluegill , and you can also use perch to catch them with very similar methods.. Small yellow perch are one of the most commonly caught fish during the ice fishing season, which means it’s easy to get access to them during the cold season.. Smaller sized ones of 2” to 4” can be a good bait option for catching bass through ice as well, though in the case of bass you should only use live ones.

Videos

1. Scenic Valley Perch Farm
(WFRV Local 5)
2. EPFC & BIM: Controlled reproduction of pike perch
(EPFC European-Percid-Fish-Culture)
3. The Farmory - Yellow Perch Fish Hatchery
(Video Mix by Roger Bindl)
4. Putting a Killer Fish in a Pool - how a pike can clear the water
(davidpaganbutler)
5. pike perch cannibalism
(Sebastian Prati)
6. Little pike - perch
(MrEdgarsG)

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