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A Checklist of Ichthyofauna of the River Dharia of Fulbari (kurigram), Bangladesh.

M. Mamnur Rashid
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh.

AK.M. Aminul Haque
Thana Fisheries Officer
Adamdighi, Bogra

AK.A Rahman
Ex-Director, Directorate of Fisheries, Government of Bangladesh, Dhaka.

Abstract/ Executive Summary:

A Systematic study of 164 fish species belonging to 77 genera and 28 families have been conducted in the river Dharla, from September 1983 to May 1986. It was found that 47 species comprising eight genera were newly recorded for the first time in Bangladesh. Three species viz., Gagata sp., Mystus sp., and Crossocheilus sp. appeared to be new to science. However, they could not be identified upto species level due to the lack of available literatures.

Keywords: Fish species, Fulbari River, Checklist

Location: Fulbari area of Kurigram District.

Start Date: 00-09-1983

End Date: 00-05-1986

Program Area: Conservation and Biodiversity

Commodity: Aquatic animal

Objectives:

To provide a checklist of the fish species in the river Dharla.

Methodology:

Description of the study area The study was conducted in Fulbari area of Kurigram District lying approximately between latitude 25^.55' and 26.2' north and longitudes 89.28' and 89.45' east with an altitude of 90' above the sea level. It is surrounded on three sides by the Dharla, infested with numerous offshoots, canals and marshes and supports a good capture fishery. The region is an alluvial plain largely with coarse sand and loamy soil. From mid November to February, the weather is dry and relatively cool. June to September is the period of true monsoon. The average annual rainfall is 86.08" .

Description of the river Dharla: The Dharla stems from Torsha river whose fountain-heads lie in the bosom of the Bhutan range. The Dharla enters the district of Lalmonirhat at Durgapur of Kaliganj Thana and flows along the boundary for a few miles and turns south- east between Fulbari and Lalmonirhat and, passing through Kurigram and Ulipur, falls into the Brahmaputra near Bagua. The bed of the river Dharla is sandy and the current, rapid. The banks are low and shelving. The stretch of the river in Bangladesh area is nearly 88 km. Sampling Sampling stations : Five sampling stations were selected' along a stretch of 15 km located at five Unions of Fulbari Thana. Two stations were at the main st eam and three, at pool zone.

Sampling period and frequency : Four sampling periods have been selected in compliance with the four dominant seasons as: Summer (February-April), rainy season (May-July), autumn (August-October) and winter (November-January). The duration of the investigation was 33 solar months commencing from September 1983 and ending at May 1986.

Method of sampling: Sampling was carried out with cast nets of 12' x 40' size with 1 cm mesh. Some specific gears for collecting gear-specific fishes wee also used. A 1 mm-mesh synthetic seine net of 150 x 6m was used at stations 2 and 5. Besides these, fishermen's catch made with push nets, chotkajal and seine net were also searched for the specimens. Samplings were made at random according .

Identification of fish species: The specimens were sorted out according to morphometric groups. Larger specimens were identified in the spot of sampling, and, the smaller ones, preserved in 10% formalin and transferred to the Riverine Fisheries Experiment Station, Chandpur, Bangladesh.

Source of Information: Bung. J. An. Sc. 1997, 26( 1-2) : 133-140 (ISSN 0003-3588)

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

It was found that 47 species comprising eight genera were newly recorded for the first time in Bangladesh. Three species viz., Gagata sp., Mystus sp., and Crossocheilus sp. appeared to be new to science. However, they could not be identified upto species level due to the lack of available literatures.

Knowledge Management: Journal