There are more than 32,000 species of fish, making them the most diverse group of vertebrates on the planet. They can be found in nearly every body of water, from the deepest depths of the oceans to the smallest puddles. Fish come in a wide variety of shapes and sizes, and they play an important role in the food chain.
Fish are a vital part of the ecosystem and are a primary source of food for many animals. They are also an important part of the global economy, with commercial fisheries providing jobs and food for millions of people around the world.