- Shopping Bag ( 0 items )
Children's LiteratureFish are part of the animal kingdom. They are vertebrates, which means they have backbones. Some fish have skeletons that are bone, while rays and sharks have skeletons that are made of cartilage. Cartilage is a strong tissue that is more flexible than bone. Fish are cold blooded. They swim to a new area when the water temperature changes. During the summer they live in warm water at the surface. When the surface water gets cold in the winter they swim to the bottom where the water is warmer. All fish have a head, body and tail. They also have fins. Fins help fish swim. They also have scales that help protect them from predators. Fish breathe by using their gills to take oxygen out of water. Animals need oxygen in their blood to live. Fish eat many different kids of food. Some fish eat other fish and some fish eats plants. Most fish hatch from eggs. Female fish usually lay many, many eggs at one time. Some fish, like sharks, give birth to live young. 2005, Capstone Press, Ages 5 to 9.