Dolly fish: a deep-sea fish species, mainly distributed in the southern hemisphere. It grows in the sea area with a water depth of 600-1200m.

Dolly fish is also called grouper, catfish, boat fish and Wuchang fish. Fish, Cyprinidae. That is, red-tailed catfish, catfish, catfish. This kind of fish is beautiful, slender, wide and flat.

There are 6 pairs of white noble whiskers above and below the mouth, one of which is longer and often stretches forward. Judging from the wild Megalobrama amblycephala population, it is one of the excellent cultured fish species bred by artificial breeding and hybridization.

Because of its fast growth, strong adaptability, wide appetite, low cost, high output and large market demand, it is favored by farmers.

This fish basically has three colors: gray-black back, white belly and orange tail fin. And the boundaries are very obvious, the head is very big, the tail and dorsal fin are red, and the other fins are blue and black, which is very elegant. The upper part of the orbit is white, forming a semicircular white circle. Adult fish are 60 to 100 cm long.