Coryphaenoides rupestris, commonly known as the roundnose grenadier, is a species of deep-sea fish in the family Macrouridae. It is widely distributed in the North Atlantic Ocean, inhabiting depths ranging from 180 to 2,600 meters. This species is characterized by its elongated body, large head, and tapering tail. As a benthopelagic predator, it feeds on a variety of prey, including crustaceans, cephalopods, and small fish. Coryphaenoides rupestris plays a significant role in deep-sea ecosystems, contributing to the trophic dynamics of its habitat.