Gobies

Most goby species are bottom dwellers. Furthermore, they are not very graceful swimmers, because their movements are characteristically jerky. They propel themselves by a few strong beats of their tails and steer themselves with their pectoral fins. Gobies are carnivorous, feeding on crustaceans, small invertebrates, fish eggs, worms, and other small fish.

In most species, gobies' eyes are their most important sensory organ, especially for detecting prey and danger. It should be noted, however, that some species have adapted to living in caves and subsequently have no eyes. These species rely primarily on their sense of smell. Also, even in species with normal eyesight, smell is used to recognize members of the opposite sex. Furthermore, gobies have been proven to possess the ability to hear.