Coryphaena

Coryphaena is a genus of marine ray-finned fishes known as the dolphinfishes. This genus is currently the only known genus in its family. The species in this genus have compressed heads and single dorsal fins that run the entire length of the fishes' bodies. Dolphinfishes are unrelated to dolphins (which are mammals) and their meat is often labeled mahi-mahi commercially to reduce possible public confusion. Dolphinfishes are some of the fastest-growing species in the ocean, so serve as a primary food source for many pelagic predators. The dolphinfish can reach up to about 88 pounds (40 kg).