Chinese sleeper (Perccottus glenii Dybowski, 1877) (Pisces, Odontobutidae) in the reserves and national parks of the middle and lower Volga (Russia): mini-review.
. A review of the distribution of the Chinese sleeper Perccottus glenii Dybowski, 1877 (Pisces, Odontobutidae) as an invasive species of fish in the territories of the reserves and national parks of the middle and lower Volga Region is presented. It occurs in 12 protected areas which is only 44.4% of the total number of protected areas. The invasion way of P. glenii in some protected areas is described, which is associated with stocking of fishery ponds. Data on habitats and the number of P. glenii in studied reserves and national parks are given, as well as the possible reasons for its absence in the ichthyofauna of other protected areas.