What type of creature is a three-bearded rockling?

The three-bearded rockling (Gaidropsarus vulgaris) is found in European waters from the central Norwegian coast and the Faroe Islands, through the North Sea, and around the British Isles to the region around the western Mediterranean. They can grow to a maximum length of 60 cm (2 ft). Their coloration varies from dusky to pale, with large chocolate-brown spots on the head and body, and fin coloration varies with location.

Three barbels, one on the bottom jaw and two on the snout, provide the fish with its common name. A barbel on a fish is a slender, whiskerlike sensory organ near the mouth. Fish that have barbels include the catfish, the carp, the goatfish, hagfish, sturgeon, the zebrafish and some species of shark such as the sawshark. Barbels house the taste buds of such fish and are used to search for food in murky water.