Beause it's what is natural to them. They evolved that way. Why do some animals only live on high mountains, or only in the desert? It's all evolution baby
Most tropical fish live in the ocean, but some do live in freshwater.
fish and aquatic mammals
There are many types of saltwater fish. Coastal fish live in the ocean near the shore. Deep sea fish live deep in the ocean below where the sunlight reaches. Pelagic fish live near the surface of the ocean. Demersal fish live near the bottom of a salt lake or sea. Coral reef fish live in or near coral reefs.
some fish live in salt water some in fresh water it all depends on the kind of fish they could live in the ocean or in the lake or in the stream or in the pond or you could have one as a pet.
Yes. Some fish do live in the ocean's transition zone. Lanterneye fish, hatchetfish, and viperfish are examples.
because starfish is suppose to live underwater to get some air
In their ocean habitat, Dolphins live among the species: Fish (Their food), Some tropical fish, krill...
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.
trout,cod, some bass, sunfish
clown fish only live in the: Pacific ocean, Atlantic ocean and Indian ocean.Clown fish do not live in seas!Clown fish live in 3 out of 5 oceansand 0 out of over 1,000,000,000,000 seas.
Most fish lay eggs, but some give birth to live young.
No. Sturgeon is a freshwater fish. Sturgeon is also one of the longest living fish, as some sturgeon live to be 100 or older.