ELI5: Explain Like I'm 5

Fish

Fish is an animal that lives in water. fish are usually slim and flat with fins and gills. They live in rivers and oceans and lakes and sometimes in ponds. Fish eat food like worms and insects, as well as other fish. They move around with their fins, and use their gills to breathe in the water. Some fish can even use their gills to propel them through the water! Fish come in all shapes and sizes, and some even have bright colors.