Influence of light on embryonic development of inconnu Stenodus leucichthys nelma (Salmoniformes: Coregonidae)

Information on inconnu Stenodus leucichthys nelma egg incubation in different lighting condi-tions is given. The influence of light on the asynchrony of inconnu embryonic development, varia-bility of plastic and meristic characteristics of embryos during incubation is fixed. After hatching of prelarvae larval development is observed during the first month of life. The results showed that larvae have the best size-weight indices, their eggs were incubated in darkness until the eye pigmentation, and the worst characteristics are typical for the larvae, eggs of which were incubated in the darkness during the entire period of embryonic development.