Operant conditioning of feeding behaviour and patterns of feeding in thick lipped mullet, Crenimugil labrosus (Risso) and common carp, Cyprinus carpio,The dominant fish fauna in the North Sea and its determination,Factors affecting the survival of dace, Leuciscus leuciscus (L.), in the early post‐hatching period,Regenerative capacity of the spleen in a splenectomized fish, Channa punctatus Bloch, with related investigations into changes in peripheral blood and haematopoiesis,Exploitation of fish in the inner Kavirondo Gulf of Lake Victoria based on tag returns,Effect of food attractants on appetite and growth rate of gilthead bream, Sparus aurata,In vitro study on the interactive effects of heavy metals on catalase activity of Sarotherodon mossambicus (Peters),Observations on growth rates of Arctic charr, Salvelinus alpinus (L.), reared at low temperature,Overwintering mortality of migratory Arctic charr, Salvelinus alpinus, (L.) reared in salt water,Seasonal variations in biochemical composition and energy content of liver, gonad and muscle of mature and immature cod, Gadus morhua (L.) from Balsfjorden, northern Norway,An assessment of the performance of a resistivity fish counter