The significance of river runoff in shaping the current distribution of freshwater fish on the Kamchatka Peninsula
Journal: Proceedings of the Zoological Institute RAS
Year: 2026

This article addresses the perceived tolerance of typical freshwater fish species to salinity and the possibility of their dispersal through marine/ocean waters. Based on the results of long-term studies of fish ecology in the estuaries and coastal zone of the Kamchatka Region, the hypothesis of the crucial role of river runoff in the modern zoogeography of freshwater ichthyofauna on the Kamchatka Peninsula is discussed. The data suggests that many resident freshwater fishes of Kamchatka are cap