A multivariate morphometric investigation of Atherina boyeri Risso, 1810 and A. presbyter Cuvier, 1829 (Teleostei: Atherinidae): morphometric evidence in support of the two species,Squamation and scale character stability in cichlids, examined in Sarotheroden galilaeus (Linnaeus, 1758) (Perciformes, Cichlidae),Histological studies on the host response to Myxobolus artus Akhmerov, 1960 (Myxozoa: Myxobolidae) infection in the skeletal muscle of carp, Cyprinus carpio,The routine metabolism of the guapote, Cichlasoma managuense (Günther 1869), related to body weight and temperature,Morphological and biometrical study of the gill rakers in four species of mullet,Metazoan parasites of sticklebacks on Sable Island, Northwest Atlantic Ocean: biogeographic considerations,Protein digestion, growth and food conversion in Atlantic salmon and Arctic charr with different trypsin‐like isozyme patterns,Radioactive strontium (85Sr) in marking whitefish [Coregonus lavaretus (L.)] larvae and the dispersal of larvae from river to sea,Feeding dynamics of sturgeon fingerlings (Acipenseridae) depending on food concentration and stocking density,The influence of social interaction on the acclimation of rainbow trout, Oncorhynchus mykiss (Walbaum) to chronic stress,Morphological changes during metamorphosis in cod (Gadus morhua L.), with particular reference to the development of the stomach and pyloric caeca,Choosing where to feed: the influence of competition on feeding behaviour of cod, Gadus morhua ,Testicular and some hormonal changes during the first four years of life in the mirror carp, Cyprinus carpio,Karyotype evolution and geographical distribution of the Thai‐medaka, Oryzias minutillus, in Thailand,The susceptibility of Salvelinus fontinalis (Mitchill) to Gyrodactylus salaris Malmberg (Platyhelminthes; Monogenea) under experimental conditions,Behavioural differences in starving herring Clupea harengus L. larvae correlate with body levels of essential fatty acids