Fish Biodiversity at Kawadighi Haor of Northeastern Bangladesh: Addressing Fish Diversity, Production and Conservation Status

Authors : Md Abu Hena Mostofa KAMAL, Md Abu KAWSAR, Debasish PANDİT, Mrityunjoy KUNDA, Khushnud TABASSUM, Md Tariqul ALAM

Pages : 151-160

Doi:10.26650/ASE202221065255

View : 45 | Download : 11

Publication Date : 2022-06-11

Article Type : Research Paper

Abstract :This research was conducted to explore the status of fish species diversity and production in the Kawadighi Haor of northeastern Bangladesh. Data were collected biweekly through direct catch assessment surveys, focus group discussions, and personal interviews using a questionnaire. A total of 87 fish and prawn species belonging 14 orders and 30 families were identified in the Haor, where 18% species were abundantly available, 20% were commonly available, 42% were moderately available and 20% were rarely available. Among the recorded species, Cypriniformes, having 34 species, had the most species, followed by Siluriformes insert ignore into journalissuearticles values(20);, Anabantiformes insert ignore into journalissuearticles values(11);, Ovalentaria insert ignore into journalissuearticles values(4);, Synbranchiformes insert ignore into journalissuearticles values(4);, Clupeiformes insert ignore into journalissuearticles values(3);, Decapoda insert ignore into journalissuearticles values(3);, Osteoglossiformes insert ignore into journalissuearticles values(2);, Anguilliformes insert ignore into journalissuearticles values(1);, Beloniformes insert ignore into journalissuearticles values(1);, Cyprinodontiformes insert ignore into journalissuearticles values(1);, Gobiiformes insert ignore into journalissuearticles values(1);, Mugiliformes insert ignore into journalissuearticles values(1);, and Tetraodontiformes insert ignore into journalissuearticles values(1);. The values of Shannon-Weaver diversity insert ignore into journalissuearticles values(H);, Margalef’s richness insert ignore into journalissuearticles values(d);, and Pielou’s evenness insert ignore into journalissuearticles values(J); indices were 2.98, 7.72 and 0.67 in Hawagulaia, 2.97, 7.52 and 0.67 in Patasingra and 2.61, 7.30 and 0.59 in Salkatua beel, respectively. The haor`s average yearly fish production was 704.09 kg/ha. Small indigenous species insert ignore into journalissuearticles values(SIS); of fish dominated the haor`s total production, accounting for 51.8 to 70.57 percent of the total contribution. The highest portion of fish produced in the non-stocked beel was SIS of fish but per hectare SIS of fish production of non-stocked beel was lower than the fingerling stocked beels. Aquaculture might have a good effect on fish production and biodiversity. The findings showed that Kawadighi Haor is a very productive and biodiversity-rich inland open waterbody that may function as a mother fishery. For the protection of current fisheries resources, multiple approaches including public awareness campaigns might be beneficial.
Keywords : Kawadighi Haor, species diversity, diversity indices, aquaculture, conservation

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