It belongs to bony fishes, catfish, dermatophytes, catfish and green fin squid. Distributed in the East China Sea, the Yellow Sea and the Bohai Sea, and also found in Korea, the Sea of Japan and the Northwest Pacific Ocean.
Morphological characteristics:
The body length is oval, the side is flat, the head is long and big, the back edge is slightly raised and inclined straight, the belly edge is slightly raised, and the side view is nearly triangular. Kiss and grow up, kill. The eyes are big, located on the upper side, with a circular diaphragm, slightly larger than the diameter of the eyes, and the nostrils are small, with two on each side, located near the front of the eyes. Small mouth, front position. The upper and lower jaws are wedge-shaped with thick lips. The branchial foramen is large and inclined inside, located below the posterior half of the eye, with the lower end opposite to the center of the eye and the upper end opposite to the posterior edge of the eye. The length of gill holes is equal to or slightly larger than the eye diameter, and at least 1/2 gill holes are above the horizontal line of oral fissure.
The pectoral fin is short, round and lateral. The ventral fin is a short spine of 1, consisting of two pairs of specialized scales, which are connected to the posterior end of the cricoid bone and cannot move. The body is blue-gray, and the young fish are scattered with some cloud-like dark markings, but the adult fish markings are not obvious. The first dorsal fin is grayish brown, and the second dorsal fin, gluteal fin, pectoral fin and caudal fin are green. ?
Extended data
Living habits:
Living in the open sea floor, inhabiting the sea area with water depth of 50 ~120m. The optimum temperature range is 13 ~ 20℃, and the optimum temperature is 14 ~ 17℃. Like to gather in groups, they have obvious vertical movement during wintering and spawning, generally floating during the day and sinking at night.
Omnivorous, the main food is copepods, isopods, ostracods and other planktonic crustaceans, but also eat mollusks and corals. Eat a lot before and after spawning, and eat little or nothing at the peak of spawning. During the day and night, they mainly eat from afternoon to midnight, but they seldom or never eat from midnight to morning.
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