Eurasian Perch

Eurasian Perch

 

(Perca fluviatilis), a fish of the family Percidae of the order Perciformes. The Eurasian perch is 40 to 50 cm long and weighs up to 2 kg. It is commonly found in freshwater lakes, rivers, ponds, and reservoirs in Europe (except for the Iberian Peninsula, Italy, and northern Scandinavia), northern Asia, and the eastern part of North America. The fish is encountered in fresh waters throughout the USSR except for Lake Balkhash and east of the Kolyma River. It has been acclimatized to the headwaters of the Amur River.

In large lakes and reservoirs, perch form two ecological morphae: the small morpha, which lives near the coast, and the large morpha, which dwells in open areas. The small morpha feeds primarily on plankton and insect larvae; the large morpha is a predator. Spawning occurs in early spring, when the water temperature is between 7° and 15°C. The roe are deposited in the form of a hollow gelatinous tube, which measures 1 m or longer in length. Perch have local economic importance.

REFERENCES

Zhizn’zhivotnykh, vol. 4, part 1. Moscow, 1971.
Nikol’skii, G. V. Chastnaia ikhtiologiia, 3rd ed. Moscow, 1971.
References in periodicals archive ?
Four piscivorous fishes such as pike, Esox lucius, European catfish, Silurus glanis, pikeperch, Sander lucioperca, and Eurasian perch, Perca fluviatilis, co-occur in Kaniv Reservoir (Ukraine).
The most abundant freshwater piscivorous fish in Europe are northern pike, Esox lucius, European catfish, Silurus glanis, pikeperch, Sander lucioperca, and Eurasian perch, Perca fuviatilis (Kottelat & Freyhof 2007).
1977: Food and feeding relations of Eurasian perch (Perca fuviaiilis) and pikeperch (Stizostedion lucioperca) in various waters of the USSR.
Composition of the Eurasian perch (Perea fluviatilis) catches in ice fishing: Does capture order predict body size?
Effects of tank wall color and up-welling water flow on growth and survival of Eurasian perch larvae (Perca fluviatilis).
Effects of tank colour and light intensity on feed intake, growth rate and energy expenditure of juvenile Eurasian perch, Perca fluviatilis L.
Tank wall colour and light level affect growth and survival of Eurasian perch larvae (Perca fluviatilis L.
In recent years it has become economically desirable to substitute Eurasian perch (P.
The Eurasian perch is very similar morphologically to P.
We analyze the impacts of such interactions on the population dynamics of Eurasian perch (Perca fluviatilis) by considering effects of intercohort competition, habitat heterogeneity, habitat selection, and energy gain made by cannibals.
The focus of our study was a single-species population of Eurasian perch (Perca fluviatilis), over a six yr period.
Effects of fisheries on Eurasian perch Perca fluviatilis in Windermere.