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Fishes of the River Padma, Bangladesh: Current Trend and Conservation Status

Md. Abdur Razzaq Joadder
Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi 6205, Bangladesh

Sk Md. Mohaimenul Haque
Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi 6205, Bangladesh

Nipa Chaki
Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi 6205, Bangladesh

Shams Muhammad Galib
Department of Fisheries, Faculty of Agriculture, University of Rajshahi, Rajshahi 6205, Bangladesh

Abstract/ Executive Summary:

The Padma River is one of the longest rivers and it is believed to be an important spawning and feeding ground for riverine fish species of Bangladesh. This study was conducted from February 2013 to January 2014 and with a view to revealing the diversity of fish fauna in the river. A total of 71 species were recorded belonging to 10 orders, 26 families and 54 genera. The most dominant fish order was Cypriniformes contributing 28 species in 16 genera. Cyprinidae was most dominant family contributing 23 species in 16 genera. Four alien species were found. Twenty eight species have been considered threatened by IUCN Bangladesh. These fishes were belonging to the following categories, Vulnerable (13%), Endangered (18%) and Critically Endangered (8%). Comparing the results with the previous findings, it was revealed that the species diversity have declined in the Padma River over time. Considering all the findings it is concluded that the Padma River could be considered a refuge for conservation of threatened freshwater fishes of Bangladesh. The conservation efforts should ensure minimization of anthropogenic impacts, especially the fishing pressure and introduction of alien invasive species.

Keywords: Padma River, Riverine fish, Threatened fish, Population trend, Conservation

Location: Padma River, Rajshahi district.

Start Date: 00-01-2013

End Date: 00-12-2013

Program Area: Conservation and Biodiversity

Commodity: Fish

Objectives:

1. To reveal existing fish species in the river Padma with present conservation status in Bangladesh.

Methodology:

Sampling site and duration: The current study was conducted in the Padma River (lower part of the Ganges River) of Rajshahi district of Bangladesh. Sampling spots were Bulanpur Ghat, Rajpara and Shahapur Ghatin Rajshahi City Corporation area. This survey was carried out for a period of one year from January to December, 2013. Sampling framework: Weekly field survey was carried out with the help of professional fishermen in the sampling spots. Traditional fishing gear, the seine net was used for sampling of fishes. The length and width of the seine net was 50 m and 5 m respectively and the mesh size was 2 cm. The fishing nets were operated early in the morning (3.00 to 6.00 am) and in the evening (5.00 to 8.00 pm). Fish specimen collection and identification: Specimens of recorded fish were collected, preserved (rare species only) and identified based on the morphometric and meristics characters. The specimens were preserved in 10% buffered formalin solution in leveled plastic jars. Determination of conservation status and population trend: The global conservation status and population trend were determined following the database of IUCN; whereas, the local conservation status was based on IUCN Bangladesh. Data analysis: Collected data were analyzed by computer software Microsoft Excel 2007.

Source of Information: Journal of Fisheries Volume 3(2): 259-266, August 2015

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Anthropogenic effects were much higher in the study area especially fishing pressure and presence of alien species. Effective and rapid management are essential regarding presence of exotic species. A major part of the total fishes were considered threatened species in Bangladesh. Thus, the studied river can be considered a refuge for conservation of threatened freshwater fishes of Bangladesh. The conservation efforts should ensure that the current status of fish fauna is maintained by minimizing anthropogenic impacts, especially the fishing pressure and introduction of alien invasive species.

Knowledge Management: Journal