 A turbot becomes infected when it swallows the infected small fish, and this completes the life cycle of the parasite.Off the coast of France, the plerocercoid larvae have been found in two species of goby, "Pomatoschistus marmoratus" and "Pomatoschistus minutus".It seems that juvenile turbots feed on copepods, but these crustaceans are too small to form a worthwhile part of the diet of larger turbot, and these bigger fish become infected after feeding on the infected gobies.