Check out our fun fish facts for kids and learn a wide range of interesting information about fish. Fish have gills that extract oxygen from the water around them. There are over 25,000 identified species of fish on the earth. It is estimated that there may still be over 15,000 fish species that have not yet been identified. There are more species of fish than all the species of amphibians, reptiles, birds and mammals combined. Fish are vertebrates. That means they have a backbone. Fish have a good sense of taste, sight and touch. They can feel pain. Some species of fish can fly (glide), others can skip along the surface, and others can even climb rock.

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