**Sperm Cryopreservation of Two European Predator Fish Species, the Pikeperch (***Sander lucioperca***) and the Wels Catfish (***Silurus glanis***)**

Zoltán Bokor, Béla Urbányi, László Horváth, Tamás Müller and Ákos Horváth *Department of Aquaculture, Szent István University Hungary* 
