Prussian carp – Carassius gibelio

The Prussian carp is a silvery freshwater cyprinid that thrives even in eutrophic bays in the Baltic Sea. Under suitable conditions, the Prussian carp reproduces efficiently and is capable of asexual reproduction. Prussian carps with both diploid and triploid chromosomes have been discovered in Estonia, and the situation is probably the same in Finland. Triploid females reproduce gynogenetically, without fertilisation, using the sperm from males of other fish species to activate the division of their own eggs.