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Tench: A Recommendation of a Premium Aquaculture Fish Species

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Tench, also known as the bearded tench, is distributed in the Irtysh River system and the Ulungur River system, the only water systems in China that flow into the Arctic Ocean. Because its body color quickly turns black after being caught, it is also called "black fish." Tench is a benthic fish that prefers to inhabit still waters with muddy bottoms rich in aquatic plants. It has a strong ability to adapt to changes in dissolved oxygen levels in water and can live in waters where carp and crucian carp cannot tolerate. It is often active at night and has strong cold resistance in winter, burying its body in mud to enter a dormant state. It is omnivorous, feeding on decaying plant debris and aquatic insect larvae, and also readily accepts artificial feeds such as soybean cake

Tench, also known as the bearded tench, is distributed in the Irtysh River system and the Ulungur River system, the only water systems in China that flow into the Arctic Ocean. Because its body color quickly turns black after being caught, it is also called "black fish." Tench is a benthic fish that prefers to inhabit still waters with muddy bottoms rich in aquatic plants. It has a strong ability to adapt to changes in dissolved oxygen levels in water and can live in waters where carp and crucian carp cannot tolerate. It is often active at night and has strong cold resistance in winter, burying its body in mud to enter a dormant state. It is omnivorous, feeding on decaying plant debris and aquatic insect larvae, and also readily accepts artificial feeds such as soybean cake, fish meal, and rapeseed cake (meal). It feeds relatively slowly and is easy to domesticate. In the wild, it grows relatively slowly, with 2-year-old fish weighing 187 grams and 3-year-old fish weighing 296 grams, but according to the results of 70 days of artificial pond culture of 2-year-old fish, they can grow to 420-535 grams. The fish reaches sexual maturity at 3-4 years of age, with males maturing earlier than females. The spawning period in the **Altay region is from late May to June, and spawning occurs in batches. The fecundity is more than 300,000 eggs, and the eggs are small and attach to aquatic plants.

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