Sound vibrations from the water are sent through the body of the fish to its ears that are located inside the fish. Sensory hairs are found in the ear to detect sounds. With the use of both ears and a lateral line, fish are equipped with a keen sense of hearing. Most fish have two nostrils located on the top of their head allowing them to smell. Of the fish family, sharks, rays, and eels, have the most sensitive sense of smell.
Fish also have a great sense of taste using the taste buds located throughout their mouth.
Fish have excellent eyesight. In fact, many scientists agree that the vision of fish is equivalent with our own vision, with some fish even seeing in color. Fish have special adaptations allowing them to see underwater and at great depths. This ability helps fish find shelter, food, and mate, while avoiding predators. To survive in any environment, organisms depend on the ability to successfully adapt.