Краткий обзор 25-летней деятельности АзЧерНИРОThe 25-year activities of the Azov and Black Sea Scientific Research Institute of Marine Fisheries and Oceanography (AzCherNIRO) are covered in a chronological order since establishing the Ichthyological Laboratory in Kerch (Crimea, USSR) in the early 1920s. The main results of this fishery organization are highlighted. Detailed investigations of plankton, benthos and various fish species, their geographical distribution and taxonomy are reviewed. The most outstanding scientists working for the institution are enlisted. Collaboration of AzCherNIRO with its branches in Odessa, Batumi and other coastal cities in the Azov and Black Seas Basin is shown.