Abstract
The ichthyofauna, their occurrence and conservation status in the Passur River of Khulna district have been studied for a period, from November 2011 to April 2012. A total of 95 finfish species contributing to 14 orders, 45 families and 77 genera were identified. The most dominant fish order was Perciformes with 38 species in 35 genera. Maximum number of species were recorded under the family Gobiidae (14 species) followed by the family Cyprinidae (8 species). Out of 95 species, 14 belonged to the threatened and 3 to the near threatened. The occurrence of majority of the fishes (50%) was recorded as available followed by less available (26%), rare (16%) and very rare (8%). Considering all the findings it is concluded that the Passur River can be considered as a refuge for conservation of threatened freshwater fishes of Bangladesh. Finally, the establishment of fish sanctuaries for both threatened and non-threatened species as well as counter survey is recommended to cross check the fish diversity for their proper management and conservation. Key words: Fish biodiversity, perciformes, vulnerable, occurrence, conservation.
Highlights
Bangladesh is a riverine country and home of at least 265 freshwater fish species (Rahman, 2005)
A total of 54 fish species of Bangladesh have been declared threatened by IUCN (IUCN, 2000) and most of the wild populations have seriously declined in rivers and streams of Bangladesh due to overexploitation augmented by various ecological changes and degradation of the natural habitats (Galib et al, 2009, 2013)
The present study was carried out in order to prepare and updated the checklist of fish species focusing on their relative abundance and global and national conservation status
Summary
Bangladesh is a riverine country and home of at least 265 freshwater fish species (Rahman, 2005). The Passur River is one of the major rivers in Bangladesh and considered home to a large number of aquatic species and livelihood for many fishermen living on it This river is an important feeding and breeding ground for many riverine fishes of the country. The present study was carried out in order to prepare and updated the checklist of fish species focusing on their relative abundance and global and national conservation status. The information from this investigation might serve as a baseline data for carrying out further study on ecology, conservation and sustainability management of fisheries resources of this water body
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