Impact and recovery of Gelidium sesquipedale algae biomass following two experimental harvesting methods in the Basque Country (Spain), Lipid class and fatty acid composition of planktivorous larval pike Esox lucius living in a natural pond, Nutritive value of diet containing dried lactic acid fermented fish silage and soybean meal for juvenile Oreochromis niloticus and Clarias gariepinus, Application of electrical conductivity for non-destructive measurement of channel catfish, Ictalurus punctatus, body composition, Ultrastructural studies of sperm penetration in the egg of the European catfish, Silurus glanis, Toxicity tolerance of oyster embryos to selected cryoprotectants, Surface megafauna related to western Mediterranean circulation, Production of female triploid coho salmon (Oncorhynchus kisutch) by pressure shock and direct estrogen treatment, Inheritance of the number of red spots on the skin of the brown trout.