Occurrence of exotic russian sturgeons, Acipenser gueldenstaedtii brandt et ratzeburg, 1833 (actinopterygii: Acipenseridae) in the baltic sea

Abstract

Exotic species of acipenserid fishes have been frequently encountered in the commercial catches of the Baltic Sea, since the early 1990s. Such sightings are rarely reflected as published records. The present paper provides detailed descriptions of two specimens of Russian sturgeons, Acipenser gueldenstaedtii caught in the Exclusive Polish Economic Zone of the Baltic Sea.