This fish breeds between May and June. During this period, the male has white wattles (pustules) on the it ad. The female lays enormous quantities of small eggs (100 to 300,000) that cling to the vegetation of the territory of the males. Spawning is noisy and causes splashes.

The skeleton of this sturgeon is made of cartilage. it barbs, on the front of it mouth, allow it to search for food in the sand. As it is the case for the larger species (beluga, Sevruga ...), its eggs are used for the production of caviar.

Reproduction of this species occurs from May to July. The female, larger, is "courted" by several males. Its toxic eggs were traditionally used as an emetic. This fish is threatened by human activities (pollution, habitat degradation ...). Reintroduction operations are regularly carried out in the rivers of Wallonia.

This fish, very common in our ponds, is subject to sport fishing. There are several varieties: scale carp, the "mirror carp" (large scales) and "leather carp" (bare skin). it food gives it flesh a smell of vase that disappears after a few days spent in a pool. It is very popular in eastern Europe.

The pike’s jaws contain around 700 teeth. Females are larger than males which do not exceed 1 m long. Breeding occurs from February to April. Eggs are laid on vegetation in flooded areas. Fishermen enjoy it for its meat and for its fighting spirit.