Coryphaenoides rudis, commonly referred to as the rough grenadier, is a species of deep-sea fish belonging to the family Macrouridae. It inhabits the bathypelagic and abyssopelagic zones of the ocean, typically found at great depths along continental slopes. Like other grenadiers, it possesses an elongated body with a large head and a characteristic tapering tail lacking a distinct caudal fin. As a benthopelagic predator and scavenger, it likely feeds on various benthic and pelagic invertebrates, as well as organic detritus. This species contributes to nutrient cycling in deep-sea ecosystems and exhibits specialized sensory adaptations, such as enhanced olfactory capabilities, to thrive in the dark, high-pressure environments of the deep ocean.