1, different species: bigeye is a kind of fish of CYPRINIDAE and Actinidia; Bald fish is a warm temperate bottom migratory fish of Megalobrama belonging to Megalobramaceae.
2. The morphological characteristics are different: the bigeye fish is slightly taller, with a flat side, an arched back of the head, abdominal ribs from the base of the ventral fin to the anus, and a high tail stalk; Skinned fish is rectangular in side view, with long head, straight or slightly concave dorsal fin, long snout, sharp protuberance, equal eye length, small mouth in side position, wedge-shaped jaw teeth in front position, slightly larger gill hole, oblique fissure and small scale.