Flounder, croaker, and hairtail are not deep-sea fish.

1. Flounder: It inhabits the sandy bottom of shallow seas.

2. Yellow croaker: This fish is a warm-temperature group swimming fish that often inhabits the middle and lower layers of the offshore waters within a water depth of 60 meters.

3. Hairtail: Hairtail has poor swimming ability. It floats in the middle layer of seawater during the day and sinks to the bottom of the sea at night.

Deep-sea fish live in deep sea areas below 100 meters, and are mostly distributed in the middle and deep seabed.

Extended information:

Life habits of yellow croaker:

Distributed in the southern Yellow Sea, East China Sea and South China Sea. Small yellow croaker is distributed in my country's Yellow Sea, Bohai Sea, East China Sea and North Korea. west coast.

Large yellow croaker usually inhabits deeper sea areas. From April to June, it migrates offshore to lay eggs. After spawning, it disperses along the coast to feed. In autumn and winter, it migrates to deep sea areas. Small yellow croaker migrates to the coast in spring. 3 After spawning between June and June, they disperse in the offshore for bait, return to the deep sea at the end of autumn, and overwinter in the deep sea in winter. Yellow croaker generally has a mixed diet and mainly feeds on fish and shrimp.

Baidu Encyclopedia - Hairtail

Baidu Encyclopedia - Flounder

Baidu Encyclopedia - Yellow Croaker