Cochleoceps
Cochleoceps is a genus of deep-sea fishes belonging to the family Macrouridae, commonly known as grenadiers or rattails. This genus is characterized by its elongated bodies, large eyes, and unique head shape, with a prominent, rounded snout. The name “Cochleoceps” itself translates to “snail-head,” referencing the distinctive curved and twisted shape of their heads.
Common Names
While they lack common names as widespread as their relatives, some species within this genus are referred to as "snailhead rattails" or "twisted-head grenadiers" due to their distinctive head shape.
Characteristics
Cochleoceps species are typically small to medium-sized, with most reaching lengths between 20 and 40 cm. They share many of the traits typical of grenadiers, such as their long, slender bodies, soft and scaleless skin, and barbels (fleshy appendages) near their mouths. However, the most striking feature of these fish is their head, which is distinctly curved and twisted, giving it a snail-like appearance.
This unusual head shape is thought to be an adaptation for feeding. The curved snout allows them to effectively probe into crevices and burrows in the seafloor, seeking out small invertebrates like crustaceans, worms, and mollusks.
Environment
Cochleoceps species are deep-sea dwellers, inhabiting the bathypelagic zone, typically at depths between 1,000 and 3,000 meters. They thrive in the cold, dark, and high-pressure environments of the deep ocean, where they are likely to be found near the seafloor.
References
For further information on Cochleoceps, please refer to the following sources: