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Availability of Small Indigenous Species (sis) of Fish in the Chalan Beel - the Largest Wetland of Bangladesh

Fahmida Akhter Kostori
Institute of Environmental Science, University of Rajshahi, Rajshahi

Selina Parween
Department of Zoology, University of Rajshahi, Rajshahi

M Nazrul Islam
Department of Zoology, University of Rajshahi, Rajshahi

Abstract/ Executive Summary:

An investigation was conducted to study the abundance and diversity of Small Indigenous Species (SIS) of fish in the Chalan Beel. Sampling was carried out frequently over a year in selected landing centres, fish markets and catch points. A total of 82 SIS fish belonging to 10 orders, 22 families and 46 genera were recorded. The order Cypriniformes (42.68%) was the most dominant order comprising 35 species. The most dominant family of the order Cypiniformes was Cyprinidae (77.14%) comprising 27 species, and Puntius was the largest genus including 7 species. The most abundant SIS fishes observed during the study period were Tengra (Mystus vittatus, M. tengara), Punti (Puntius sophore and P. ticto), Taki (Channa punctatus), Guchi Baim (Mastacembelus pancalus), and the least abundant SIS fish were Aplocheilus panchax, Badis badis, Danio sp. and Chaca chaca. Availability of the species were ranked as Few (39%), followed by Common (23%), Very Common (15%), Rare (16%) and Very Rare (7%). At Mohisluti fish landing centre (under Tarash, Sirajganj) the highest number of species (79, 96.34%) of small fishes were found. Abundance of different SIS fishes were found to vary with the season.

Keywords: Availability, SIS fish, Chalan Beel, Wetland

Location: Pabna, Sirajganj and Natore

Start Date: 01-09-2010

End Date: 31-08-2011

Program Area: Resource Development and Management

Commodity:

Objectives:

An investigation was conducted to study the abundance and diversity of Small Indigenous Species (SIS) of fish in the Chalan Beel

Methodology:

The sampling was conducted for a year from September 2010 to August 2011 following the method described by Backiel & Welcome (1980). To carry out the present study more than 14 spots of the Chalan Beel under 8 upazilas of 4 districts were selected. These spots were Natore sadar, Singra, Baraigram and Gurudaspur of Natore district, Chatmohor and Bhangura of Pabna district, Tarash of Sirajganj district and Atrai of Noagaon district. Survey spots included different fishing spots of the Beel, various fish landing centres and fish market adjacent to Chalan Beel. The study spots were selected in such a way that those spots cover all the major areas of Chalan Beel. Five fish landing centres viz. Singra (Natore), Atrai (Noagaon), Mohisluti (Tarash, Sirajganj), Bhangura and Chatmohor (Pabna) and 9 fish markets: Naldanga, Jonail, Rajapur,Baraigram, Gurudaspur, Chowgram, Kaliganj, Tarash and Mannannagar and some catch point were selected to collect fish sample and data for this investigation. Various participatory rural apprisal (PRA) tools like interviews, direct observations and focus group discussions (FGDs) were executed, with the fishermen and fish traders were used to constitute data for this investigation. The samples of SIS fish were primarily sorted out in the collection area with the help of fishermen or fish traders. The samples which were difficult to identify on the spot, were preserved in 10% formalin and brought to the laboratory of the Institute of Environmental Science, University of Rajshahi,

Source of Information: Univ. j. zool. Rajshahi Univ. Vol. 30, 2011 pp. 67-72 ISSN 1023-6104

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The present result is an overview on the outstanding richness and diversity of Small Indigenous Species (SIS) of fish in the Chalan Beel. Community Based Management System would be taken to train the fishers and culturists to avoid using hazardous chemicals in the beel, and to avoid overfishing. Steps should also be taken to restrict fishing during the reproductive season of the fishes. As with the entry of flood water most of the SIS fishes start to breed, so fishing can be done keeping some definite restricted areas as the sanctuary for the brood and the spawns. These steps will increase the fish production of the Chalan Beel in future.

Knowledge Management: Journal