If you are thinking unicorn fish is any type of fish then you are wrong because fish come in more varieties than any other group of vertebrate animals. There are 32,000 different species of fish. There are three major types or classes of fish including jawless, cartilaginous, and bony fish. An example of a jawless fish is the lamprey eel. Sharks are cartilaginous fish and the blue marlin is a bony fish. Fish vary in all sorts of colors and sizes. Fish can be as large 40 ft long to 1/2 inch long. There are some animals that live in the water and we may think of as fish, but really aren't classified by scientists as fish. These include whales, dolphins, octopus, and jellyfish.The FamiLane Collection’s premium T-shirt should be a big part of any kids’ wardrobe. It wears rough and tough for kids who play the same way. Ideal for playing outside or sitting quietly doing homework, the premium T-shirt from the FamiLane Collection is as versatile and durable as it gets.