Collecting sites in the middle Volga and upper Don regions, explored by various working groups. Map was created in ArcGIS 10.8 software (www.esri.com).

 
  Part of: Artaev O, Ruchin A, Ivanchev V, Ivancheva E, Sarychev V, Moreva O, Mikheev V, Medvedev D, Klevakin A (2020) Fish occurrence in the middle Volga and upper Don regions (Russia). Biodiversity Data Journal 8: e54959. https://doi.org/10.3897/BDJ.8.e54959