Snailfish is a type of deep sea fish that belongs to the family Liparidae. This fish is often referred to by several synonyms, including sea snail, sea loach, and snailhead. These names are derived from the unique appearance of snailfish, with a flattened head and body, and a long tapering tail. The coloration of snailfish can vary, ranging from pale white to dark black. These fish are known to inhabit the deepest parts of the world's oceans, and are often found in trenches and canyons. Despite its unappetizing name, snailfish is an important food source for many marine animals.