The sole belongs to the family of flatfish and has been a well-known and popular fish for centuries. Sole are mainly active at night, when they go in search of shellfish, crabs and small fish. Sole have a special ability, which protects them from predators. If attacked, they successfully imitate the weever, a highly poisonous fish which is gladly avoided by other sea creatures. Soles are very sensitive to cold and therefore move to warmer areas in the colder months.
Adult soles grow to a length of 60 centimetres with a maximum weight of two kilograms. In optimal conditions, they can reach the grand age 17 years. Unlike its relations, the sole has fully developed pectoral fins. It has a short head and the small eyes are close to each other on the right-hand side of the body. The body is elongated, oval and can assume the colour of its background artfully.
The sole reaches sexual maturity in the third to fifth year. In the spawning period at the beginning of summer the sole takes to the shallow, coastal regions where, after a short time, the larvae hatch.