migration of fishes?

Answer 1

Yes, fishes.
Fishes is properly used pluarl form when referring to more than one species of fish. "All the fishes in the ocean"
Fish is plural if it is the same species of fish. "A school of fish".

Many types of fish undertake migrations on a regular basis, on time scales ranging from daily to annual, and with distances ranging from a few meters to thousands of kilometers. The purpose usually relates to either feeding or breeding; in some cases the reason for migration is still unknown.

Migratory fish are classified according to the following scheme:

diadromous fish travel between salt and fresh water

anadromous fish live in the sea mostly, breed in fresh water

catadromous fish live in fresh water, breed in the sea

amphidromous fish move between fresh and salt water during some part of life cycle, but not for breeding

potamodromous fish migrate within fresh water only

oceanodromous fish migrate within salt water only

The best-known anadromous fish are salmon, which hatch in small freshwater streams, go down to the sea and live there for several years, then return to the same streams where they were hatched, spawn, and die shortly thereafter.

The most remarkable catadromous fish are freshwater eels of genus Anguilla, whose larvae drift on the open ocean, sometimes for months or years, before travelling thousands of kilometres back to their original streams (see eel reproduction).

Vertical migration is a common daily behavior; many marine types move to the surface at night to feed, then return to the depths.

A number of large marine fishes, such as the tuna, migrate north and south annually, following temperature variations in the ocean. These are of great importance to fisheries.

Freshwater fish migrations are usually shorter, typically from lake to stream or vice versa, for spawning purposes.

Answer 2

Some fish migrate from some parts of the world to other parts. Salmon are a great example of this. They stay in the ocean until it is time to lay their eggs. They swim up the rivers in to the mountains or other places (always exactly where they were born themselves) and lay their eggs. The males then fertilize the eggs. After this has been done, they die.

Answer 3

when temparature of water is too warm or too cold fishes migrates. to another space when temparature of water is safe to them.

Answer 4

alongwith you can also have a look at migration of birds - fantastic

Answer 5

from warmer to colder waters

Answer 6

fishes?

Answer 7

spawn