Fethids are a species of large, fish-like creatures that live in the ocean. They are about two feet long and weigh about two hundred pounds. They are extremely intelligent and have evolved a complex system of language, culture, and social structure. They communicate with one another using a series of whistles and clicks that vibrate through water, which they use to convey complex ideas and emotions. They are known to be extremely peaceful and will not attack any other creature unless provoked, although they will defend themselves if necessary. Fethids have incredibly dense and strong skin that makes great armor when hunted.