tench

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tench

a European freshwater cyprinid game fish, Tinca tinca, having a thickset dark greenish body with a barbel at each side of the mouth
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Tench

 

(Tinca tinca), a fish of the family Cyprinidae. The thick, deep body is covered with a thick layer of slime and small scales. The back is dark green, and the eyes olive with a golden hue. Length, approximately 30 cm (sometimes 60 cm); weight, about 500 g (sometimes 7.5 kg). Small barbels are at the corners of the mouth. Tench inhabit the fresh waters of Europe except for the river basins that flow into the Arctic Ocean. They live in the rivers and lakes of the European USSR and in the basins of the Ob’ and Enisei rivers. Slightly mobile bottom fish, they prefer standing and overgrown rivers and lakes. Because these fish can tolerate low oxygen content, they are found in bodies of water that temporarily lack oxygen. Sexual maturity is reached at three or four years of age, when the body measures more than 20 cm long. The fecundity is 300,000 to 400,000 eggs. Spawning occurs intermittently over an extensive period. Tench feed on small invertebrates and, less commonly, on aquatic plants. They are of little commercial importance. Tench are bred artificially to produce a golden variety, similar to the goldfish that is produced by breeding the silver carp.

REFERENCES

Nikol’skii, G. V. Chastnaia ikhtiologiia, 3rd ed. Moscow, 1971.
Zhizn’zhivotnykh, vol. 4, part 1. Moscow, 1971.

A. A. SVETOVIDOVA

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Daily and seasonal variations in hematological and biochemical parameters in the tench, Tinca tinca Linnaeus, 1758.
Resident David Adams was reunited with his 25-year-old tench, whose Latin name is Tinca Tinca. He was found swimming in water collected in the ditch more than 100 yards from his home.
(1) Species 1884 1937 Bullhead catfishes (Ictaluridae) Flathead catfish, Pylodictis olivaris X Channel catfish, Ictalurus punctatus X Brown bullhead, Ameiurus nebulosus X X Carp (Cyprinidae) Common carp, Cyprinius carpio carpio X X Ide, Leuciscus idus auratus X Goldfish, Carassius auratous X Tench, Tinca tinca X Suckers (Catostomidae) Buffalo, Ictiobus sp.
Unfortunately, several species that have been introduced have created an adverse situation for the native species Cyprinus carpio, Carassius auratus, Gambusia affinis, Cnesterodon decemmaculatus, Salmo trutta fario, Salvelinis fontinalis, Tinca tinca, Odontesthes banariensis, Cichlasoma facetum, Ictalurus nebulosus (Huaquin-Mora and Manriquez-Leiva, 1986).
Utilisation de la temperature et de la photoperiode pour controler la maturation sexuelle en captivite de trois especes de poissons cyprinides europeens: Barbus barbus (L.), Leuciscus cephalus (L.) et Tinca tinca (L.).
Connections between temporary lagoons and brackish waters permit the coexistence of halophilous and freshwater fish such as the carp (Cyprinus carpio), tench (Tinca tinca), sunfish (Lepomis gibbosus), pike (Esox lucius), and mosquito fish (Gambusia affinis).