Factors responsible for differences in the distribution of fish in cross-section of riverbed of the foothill river
A spatial distribution of fish in the cross section of the foothill river Inya (Upper Ob' basin) was researched. Four types of the ecotopes, which are upper stream plots (I), upper ripal plots (II), lower ripal plots (III), shallow rapid plots (IV) are identified. Water speed, depth and bottom sediments are the most significant factors determining the mosaic distribution of fish species and ichthyomass.