We can find fish in rivers and oceans. Fish are cold-blooded. They use fins to swim.

Fish have scales and slime all over their bodies. These help them glide through the water.

Fish eat different foods. Some fish eat plants that grow in the water. They also can eat other fish and animals.

Flatfish, flounder, turbot, and sole can change their colors and patterns. This helps them blend into their surroundings so they can't be seen.

What part of body do they use to swim?

Why do some fish change their colors and patterns?