Plaice is an oval-shaped flatfish that is caught year-round in the North Sea and elsewhere. It is one of the most important fish species for Dutch fisheries. Dutch fishermen in the North Sea hold one-third of the European catch quota for this species. Plaice live on the sea floor and eat mollusks and worms. Razors and ragworms are live foods for plaice that are good for thickness and flavor. These species live in the soil, just like plaice. But what distinguishes May plaice from regular plaice?