the ratan goby (ponticola (neogobius) ratan) is a species of goby native to brackish

actinopterygii animal aqua aquarium benthophilinae benthos biological biology black sea bottom crawfish crayfish ecological ecology europe fauna exoskeleton fish gobiidae gobiiformes goby hydrobiological hydrobiology hydroorganism life malacostraca marine nature neogobius odessa bay organisms perciformes ponticola ratan seabiological seabiology summer ukraine water undersea underwater wild wildlife zoology