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Other names: Tench
Latin name: Tinca tinca
size: 30 - 70 cm
mass: up to 7 kg
Older: 5 - 20 years
Appearance: dark brown, dark green, golden yellow
Sexual dimorphism: Yes
Nutrition type: ?
food: Snails, plankton, plant material, insect larvae
original origin: Europe
Sleep-wake rhythm: twilight and nocturnal
habitat: prefers shallow standing waters with dense riparian vegetation
natural enemies: Predatory fish
sexual maturity: about the age of three
mating season: April - August
oviposition: 100,000 - 300,000 eggs
social behavior: swarming
Threatened with extinction: No
Further profiles of animals can be found in the Encyclopaedia.
Interesting facts about the tench
- The tench or Tinca tinca describes a freshwater fish counted among the carp species, which is widespread in Europe.
- With the exception of Dalmatia and Greece, Scotland and Northern Scandinavia, as well as the Crimea and the Mediterranean islands, the tench can be found throughout Europe and also populates large parts of the temperate zones of Asia.
- The tench inhabits warm and shallow lakes and very slowly flowing waters, but also occurs in brackish water.
- It is extremely resistant, as it can also easily live in waters that have a high pH and low oxygen content.
- Therefore, it can easily survive even in muddy and stagnant water in the summer with acute oxygen deficiency. In the hot season, it falls under such conditions in a rigor and therefore requires little oxygen.
- The tench owes its German name to its thick, covered with tiny round scales skin, which has a slimy surface.
- It is of strong and stocky physique and has a vorstülpbare mouth and at the corners of each two short barbels and strikingly rounded fins.
- The skin is dyed dark brown or dark green on the back, appears golden on the sides and has a yellowish, often almost whitish hue on the belly.
- Tench reach body lengths of up to forty, less often up to seventy centimeters and a maximum weight of ten kilograms.
- As predominantly twilight and nocturnal fish, the tench snails snails, mussels and insect larvae. As night falls, she begins to rummage through the muddy ground for food.
- At about three years, tench are sexually mature. The spawning period extends from April to August and depends on the temperature conditions.
- At a water temperature of about twenty degrees Celsius, tench swarms close together and seek sun-kissed riparian zones.
- There, the females stick a total of several hundred thousand eggs over a period of several weeks to the aquatic plants.
- After a few days the larvae hatch, feeding on the yolk sacs and sticking to the plants so as not to sink into the mud.
- Once they have gills, they begin to swim in free water and eat plankton.
- The life expectancy of the tench is up to twenty years.
- Tench is a popular food fish thanks to its tasty and nutritious meat. Today, tench are bred specifically in Chinese aquaculture.