No, there are thousands of species of fish.
sharks
NoA fish is a fish. Fishes and reptiles are two different classifications of animal.
It all depends on the fish. Some species often guard the eggs and some species will eat. Also remember that all fish have their own traits and characteristics. What one fish of a species does another fish may not do.
There are several fish species who are known to prey on smaller individuals of their own species, which makes them cannibals.
they are shy around other species but within its own species they always fight. O.O
No, minnows are species of small fish. There are many different species.
No. The "fighting fish" ie Betta, will only fight members of his own species. Oscars will eat Bettas.
Some species of fish stay with their offspring, or babies. Most other fish will release eggs into the waters they live in, and the fish develop and grow on their own.
As far as i know there are two fish that makes its own light and that is the lantern fish and the angler fish..in addition to this, fishes made light because of there habitat and likewise to attract there prey and some species made it to attract their partner...
Floran fish can not live with many other types of fish. They are highly aggressive and should be kept in species-specific tanks with their own kind.
If you're trying to feed your own small fish, usually crushed fish flakes, or crushed bloodworms will do the trick. In the wild, young fish's diets can vary wildly, as these species are much more varied. Sometimes what qualifies as a 'young' fish in some species are still big enough to eat smaller fish.
There are well over 24,000 (and counting) species of fish known to science.