Fishes are small living things that can live in water. Some fishes are in water from the dinosaur time. Some eat other fishes or there eggs. Some fishes eat insects and sea grass. Only lung fish can survive on land as it don’t have gills, they have lungs. There are fishes that have legs called leg fish, some people are confused in leg fish and salemanders. There are 28,000 or over known extinct species.