Merret's snailfish (Careproctus merretti), also called the snakehead snailfish, is a species of fish in the family Liparidae.
It is named for the British ichthyologist Nigel Merrett (born 1940).
Merret's snailfish is silvery-pink in colour, with a black peritoneum. Its maximum length is . It has 69 vertebrae. Its hypural plate (expanded ends of the that form a wide, fan-like plate onto which the caudal fin rays are attached) is single, and there are no .
Merret's snailfish lives in the Porcupine Abyssal Plain; it is bathydemersal and non-migratory, living at depths of up to .