Author(s): Basir Ahammad, Mohammed Khandaker, Md. Istiaque Hossain, Md. Abdullah-Al-Mamun, Sarker Mohammed Ibrahim Khalil, Farjana Akhter Mita, Sayed Mashequl Bari, M. M. Mahbub Alam, Md. Moniruzzaman

Abstract: A quest was conducted to assess the status of fish diversity in Shatghari point of Surma river, Golapganj, Sylhet from January 2015 to September 2015. Multivariate analyses were performed using the software PRIMER V₆ and Canonical Correspondence Analysis (CCA) was done using the PAST software. In the present study, 34 species of fishes belonging to 7 orders were identified from the study area where Cypriniformes (11 species) encompassing highest percentage (76.56%) of the whole biomass. The Shannon-Wiener diversity index, Margalef richness index, Pielou’s evenness index and Simpson dominance index were found to be 2.31±0.69, 3.86±0.31, 0.46±0.03 and 0.88±0.007 respectively. Among the identified fish species, 44.63% were recorded as threatened according to IUCN and 5.49% were exotic species in respect of number. Top most 14 fish species were considered for CCA and it’s indicate that, two most important environmental parameters CO₂ and TDS are shaping species assemblage structure in Surma River at Shatghari point. All the water quality parameters found within the permissible limits for fishes. In epilogue, bearing all the outcomes found in the study indicates that, the Shatghari Point of Surma River is enriched with fish diversity.

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