On distribution of migratory fry of pink salmon in the stream of a small Sakhalin river

On distribution of migratory fry of pink salmon in the stream of a small Sakhalin river

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Distribution of migratory fry of pink salmon Oncorhynchus gorbuscha in the stream of the Voznesenka Lead Wires River (south-eastern Sakhalin) is investigated and its high inhomogeneity is revealed.One of the reasons is the stream structure - the fry aggregate mainly in the main flow.Another reason could be the fry behavior - they instinctively try to form aggregations with visual contact, in Cod Liver Oil particular in relatively light nights or in conditions of their high abundance (short distance between the individuals).