The market price of black tongue horns is about 10-90 yuan. It mainly feeds on zooplankton (such as crab larvae, arrow worms and planktonic tunicates), and sometimes also eats red thread algae.

After understanding how much it costs to hang a black tongue, let's introduce its appearance characteristics.

The back of the fish is blue-gray when the black tongue is hanging, and the abdomen is Pale yellow, gill membrane dark brown. Generally without any markings on the sides of the body, males may have light blue spots on the upper part of the head and some light blue transverse bands or spots on the front of the body. The caudal fin is light blue or slightly darker, and the caudal margin is yellow-green.