What’s In A Fish?
Fish are animals that are cold-blooded, have fins and a backbone. Most fish have scales and breathe with gills. They’re one of the oldest animal families to live on Earth. They were here long before the dinosaurs – about 500 million years ago — and they still thrive. There are over 25,000 known species of fish. There are probably many more that we haven’t discovered yet.Read moreRead less
Fish are vertebrates. That means they have a backbone. But unlike mammals, fish don’t have lungs. They breathe by taking oxygen from the water in through their mouths, where it passes over the gills. The gills then absorb oxygen from the water and send the oxygen throughout the body. Some fish are carnivores. They eat other fish and small animals and insects. Other fish are omnivores, eating both plants and animals.