The price of a black devil is about 15-30 yuan a piece, depending on the size and quality of the fish, and the prices in different regions are also different. After understanding how much the black devil costs, let's take a look at the morphological characteristics of the black devil.

The black devil has a stick-like tail handle, a knife-shaped body, a flat side, and a smooth, curved back Linear, pelvic and anal fins connected, wavy to the tail. There is no dorsal fin, the anal fin is broad and developed, and the caudal fin is elongated like a rod. There are two white rings on the caudal fin of the juvenile fish, but they will degenerate and disappear as they grow, like a black lace outlining the curve of the fish.