Tench

Tench, also known as the black fish, is distributed across Europe, eastward to the Ob River and the Yenisei River. In China it is found only in the **Irtysh River and Ulungur River basins. The tench is also one of the main economically important freshwater aquaculture fish in European countries, and in Europe it is known as the royal pet fish. There are many species of fish in the genus Tinca, and the tench is the most economically valuable, making it a relatively well-known fish in China. This fish is relatively easy to rear, is omnivorous, cold-tolerant, strongly disease-resistant, easy to transport over long distances, and its market acceptance is also fairly good. The flesh of this fish is exceptionally delicious, and its unsaturated fatty acids are 3-4 times higher than those of other freshwater fish. This fish is a benthic fish with omnivorous feeding habits, feeding on plant debris and aquatic insects. It can consume formulated feed and has a great capacity to adapt to changes in dissolved oxygen in the water. In winter it has strong low-temperature tolerance and can burrow into the mud to overwinter. This fish has only been developed and utilized in recent years. In Guangdong Province, within just two short years of introduction, it has already shown a tendency to rise abruptly, with very rapid promotion of its farming, and it has already formed a major variety industry in freshwater aquaculture. However, in Zhejiang Province the farming of this fish should be just flourishing, with promising prospects, and if sales channels can be opened to other provinces or even foreign countries, its development prospects would still be very considerable. Its drawback is that its growth rate is slightly slow.