During the last decade we worked intensively on the cryopreservation of fish semen with special reference to of the Salmonidae, Cyprinidae and Lotidae. For many species of the mentioned families we developed efficient cryopreservation methods applicable for practical use. Presently we work on the automation of these methods.
The cryopreservation of eggs and embryos was not successful until now due to their large size and complex organization. The development of such methods must be considered as a long-term research work.