Depth of 1.5-2 m
The bread and the cheese!
The abyssal rattail fish lives at a depth of anywhere from 6,562 to 14,764 feet deep. There are other types of rattail fish that live about 3,281 feet.
They don't. Fish that live at a high depth stay there for as long as the live, as they would explode when pressure dropped. The same is true for fish that live high up in the ocean: they would implode when pressure rises.
no human can live in the depth sea
They are surface fish so the depth of the water is immaterial to them.
no human being can live on the depth sea
Depends on the depth and whether it's warm or cold water. However, at the depth we usually consider "the ocean" there are moray eels, clown fish, sea anemones, coral, parrot fish, sea urchins, lobsters, angel fish, lion fish, pipe fish, sea snakes, octopi, dolphins, tuna, sharks of all kinds, swordfish and many more. Feel free to ask if you need more.
Nematodes can live on fish, in fish and fish can consume them.
Light coming from the fish under water deviate from its original path due to refraction phenomenon and its image is displaced from its actual position. The image of fish is appeared at shallower depth than its actual depth
Depends entirely on the type of fish. Some live their lives at a particular depth. Some use the ocean like an elevator - you might find them at 20 feet or 600 feet. Some are deep ocean oriented, and live in the eternal darkness of the deep.
Control the depth at which a fish swims.