Studying fish biodiversity and abundance in Boujagh Wetland of Kiashahr, South-Western Caspian Sea

The fish biodiversity and abundance studied in Boujagh wetland, close to Kiashahr south-western Caspian Sea during the year 2002. In each season, samples were collected by using gillnet, common haul seine, cast net and dip net in a 7-15 day sampling period and found one class (Osteichthyes), eight orders, nine families and 25 species and sub-species of the fishes found in the wetland. We showed that of the order Cypriniformes, two families of Cyprinidae with 14 species and sub-species and Cobitidae with two species are living in the wetland. Other fish orders were only represented by one family: Esociformes by family Esocidae, Syngnathiformes by Syngnathidae, Cyprinodontiformes by Poeciliidae, Siluriformes by Siluridae, Gasterosteiformes by Gasterosteidae, Atheriniformes by Atherinidae and Perciniformes by Gobiidae. Of these orders, Cypriniformes and family Cyprinidae had the most diverse fish species with Blicca bjoerkna being the most abundant.