fish

Fish are cold-blooded vertebrates that live in water. They have gills for breathing underwater, and they have fins for swimming. Fish come in all shapes and sizes, from the tiny guppy to the giant whale shark.

There are over 30,000 different species of fish in the world. They can be found in all oceans and in many freshwater habitats, such as lakes, rivers, and ponds.

Fish are an important part of the food chain. They are eaten by other animals, such as birds, mammals, and other fish. Fish are also eaten by humans.

Fish are an important part of the ecosystem. They help to control populations of other animals, and they help to clean the water.

The fish swam in the water.