The freshwater houting is a large fish, which in Europe measures up to 130 cm in length and weighs up to 10 kg. It has a dark green back, silvery white sides and belly, and a short snout. It originally came from Lake Madu in Pomerania. As early as 1882 it was introduced into some ponds and since then, it has become an important breeding fish in some areas. It is a deep-water species, which only swims to shallow waters in November, which is its spawning time. It generally lives on plankton but large specimens also catch insects and small fish. A form of C. lavarelus occurs in the English Lake District (where it is known as the skelly or schelly), others such as the gwyniad and powan occur in North Wales and south-west Scotland. These fishes never grow to a great size.
Similar whitefishes, also known as ciscoes, are found in North American high altitude lakes.
Coregonus lavaretus maraena
Maximum size and weight: 130 cm, 10 kg.