The sequence of embryonic development is described for Galaxias maculatus attenuatus (Jenyns). Standard stages are described and the rate of development at two different constant temperatures is given. Field results are compared with these data. It appears that G. m. attenuatus is very temperature labile in its development, an adaptation of high survival value in the habitat in which the eggs are laid
SUMMARYGalaxias vulgaris Stokell is a totally freshwater fish species and the adults usually live a cryptic life under stones. The life history of this species, with special emphasis on its embryology, growth rate, and sex ratio, is described. Comparisons are made with other members of the family Galaxiidae, especially G. maculatus attenuatus.
SUMMARYThe size composition of a season's catch of Galaxias maculatus attenuatus (Jenyns) whitebait is given. An analysis of consecutive catches shows that there is no overall increase in the size of the whitebait caught. This supports the theory that these fish have reached a physiological stage at which they migrate up accessible freshwater streams. The subsequent changes are so great that they warrant the term metamorphosis.The whitebait stages of other species of Galaxias are briefly compared.
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