The blind grass carp is slender and slightly flat. The back and abdomen are blunt and round, and the back surface is large. This kiss is sharp and short. Eyes are the same size, and the front is better. The mouth is medium-sized, slightly inclined, and the lower jaw is prominent, slightly longer than the upper jaw. The posterior end of maxilla expanded below the posterior edge of orbit.
The gill cover has a flat tip. The bases of the two dorsal fins are connected. The first dorsal fin has 7-8 hard spines, and the second dorsal fin has 1 1 ~ 12 soft strips. The upper part of the body color is dark brown and the lower part is silvery white. The caudal fin is round. The body is bluish gray, and the back of the kiss and the space between the eyes are brown. The pectoral fin is colorless. The other fins are grayish brown.
Extended data:
Living habits
1. Habit: offshore fish in warm zone. China, Southeast Asia, India and northern Australia. Living in seawater, salty fresh water and fresh water, inhabiting and foraging in coastal waters, I like slow-flowing clear water.
2. Feeding habits: Carnivorous fish, body length 1~ 10cm, with 20% phytoplankton in the stomach and the rest small fish and shrimp. The bigger one is carnivorous, 70% is shrimp and 30% is small fish.
3. Growth: the body length is 0.5~0.8cm, and it can reach about 3cm after feeding 15 ~ 20 days. After feeding 100d, it can be put on the market, and its weight is 1kg. Zhanjiang coastal waters often catch more than 5 kilograms, and the eastern part of the South China Sea Strait catches more than 20 kilograms.
4. Migration: Perch inhabits estuaries, rivers and lakes to grow and develop, and then migrates to the ocean to lay eggs in the island breeding season.