Fish are vertebrates that live underwater and breathe through gills, which take oxygen out of the water.

Fish lay many, sometimes millions, of eggs in the water.

Fish are cold-blooded and have scales and fins to help them move through the water.

Not all living things underwater are fish. Coral and anemone are not fish, nor are clams and crabs. 


Fun Fact!
Sharks and rays are fish that have bodies made out of cartilage and do not have scales.


Do you see some similarities between fish and another animal group?