The difference between the plum child fish and the small yellowtail is mainly in size, head and tail.

The small yellowtail is slightly larger than the medaka, which is usually 4-10 centimeters long and up to 20 centimeters long; the small yellowtail is about 20 centimeters long and up to 40 centimeters long. The head of the fish is large and rounded, with a short and rounded kiss; the head of the fish is large and not rounded, and the lips are more pointed when the mouth is closed. The caudal peduncle is long and slender, and the caudal fin is wedge-shaped; the caudal peduncle of the small yellowtail is shorter, and the caudal fin is bisected.

Maytom fish

Maytom fish has a flat body, high in front and tapering in the back, with a slender caudal peduncle, a large, bluntly rounded head, and a protruding forehead, with the head accounting for about one-third of the body, so it is commonly known as the "big-headed treasure". The head is about one-third of the body, so it is commonly called "big head treasure". The muzzle is wide and rounded, the slit is large and oblique, and the lower jaw is longer than the upper jaw. The mucous cavity is well developed. The occipital spines are prominent, with anterior and posterior spines in the shape of a saddle, and the central and medial chin pores are arranged in a quadrilateral pattern.

The margin of the anterior gill cover bone is serrulate, there is a notch between the dorsal fin spine and the fin bar, the spines are weak, and the caudal fin is pointed. The body is covered with thin small round scales, the scales are fine and easy to fall off, the body is soft, the upper part of the body is golden yellow or grayish brown, the lower ventral side is golden yellow, and the abdomen is white.

Small yellowtail

Small yellowtail, also known as small yellowtail, vertebrate, Scleractinia, Stenotaphylinidae, also known as: small fresh, big eyes, flower color, small cucumber, ancient fish, yellow scaled fish, small spring color, golden dragon, thick scaled boy, also known as the "yellowtail", "small yellow flower". The body shape is similar to the yellow croaker, but the head is longer, the eyes are smaller, the scales are larger, the caudal peduncle is short and wide, and there are 5-6 rows of scales between the starting point of the dorsal fin and the lateral line, which are golden yellow in color. Vertebrae 28-30. Otoliths larger.