Fish Gestation Period How Long Are Fish Pregnant
Types of Fish A fish is a cold-blooded aquatic vertebrate with gills, swim bladder, and paired fins. Though this description may seem specific, the size, color, and habits of fish actually vary drastically. Species range from the tiniest of the anglerfish to the massive whale shark, from vicious predators to gentle giants. There are over 33,000 fish species in the world, with trillions of individual fish. As scientists continue to explore the waters of our world, they discover more species....