Have you heard of a fish called a rabbitfish? It's not actually a bunny that swims, it's a type of fish that looks a little like a rabbit.
Rabbitfish have a long, narrow body that's covered in tough scales to protect them from predators. They swim with their fins, which are like little wings that help them move through the water.
Rabbitfish eat algae, which is a kind of plant that grows in the ocean. They have special teeth that are shaped like scissors to help them cut the algae off the rocks.
One really interesting thing about rabbitfish is that they have special glands near their tails that can produce a poison if they feel threatened. This poison can make predators sick, which helps the rabbitfish get away.
Some people like to eat rabbitfish, but you have to be really careful when handling them because of their poisonous glands. If you ever see a rabbitfish in the wild, make sure to give them plenty of space and let them swim away in peace.