The tub gurnard is the largest gurnard species found in the North Sea: it can grow up to 75 centimeters long. It is a benthic fish which eats primarily crabs, shrimp and small lobsters; it will also eat worms and molluscs. Adults eat flatfish. Tub gurnard overwinter in warm seawater: from the coast of Morocco to the English Channel. In the spring, this fish migrates to more northerly waters as far as the pole circle, and including the North Sea. Tub gurnard are often caught by the fisheries while fishing for flatfish. They receive a good price at the market.