Aquatic vertebrates are fish. They generally have gills, pairs of fins; a lengthy, scale-covered body, which is cold-blooded. The fresh and salty seas worldwide have fish, about 20,000+ species of spinal creatures. Fish is rich in phosphorous and calcium and a major source of minerals, and the eating of fish is much more beneficial. In many fields of medical and biological study, fish are excellent laboratory animals. Fishes are also considered as human good pets. In nature, humans and fish have always had a close relationship. So here we are providing a List of Fish Names, Fish Names Starting from A, Fish Types & Breed, Pet Fish Names & a lot more about these beautiful swimmers.