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New Distributional Record of Hasselt’s Bamboo Shark Chiloscyllium hasseltii (Orectolobiformes: Hemiscylliidae) from Bangladesh Waters


A new record of Hasselt’s bamboo shark Chiloscyllium hasseltii (Orectolobiformes: Hemiscylliidae) has been confirmed from the St. Martin’s Island, the northeastern part of the Bay of Bengal of Bangladesh. Two male specimens were collected on 19th December 2018 from the coast of St. Martin’s Island as a bycatch of the local fishermen. The traditional morphometric method was applied for taxonomic identification which was further validated by a molecular approach based on partial cytochrome c oxidase subunit I (COI) sequences (DNA barcodes). The key characteristics of this species are the distance from first to second dorsal fin less than 9.3% of TL; first dorsal fin height less than 6.6% of TL and second dorsal fin height less than 5.8% of TL. The morphometric, meristic and DNA barcoding data thus confirmed the presence of C. hasseltii in Bangladesh. With this report a new shark species has been added in the treasure of the marine ichthyofaunal diversity of Bangladesh and also updates the geographical distribution range of this species.

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Fig. 2

Data Availability

The voucher specimens DUZM_MF_003C, TL 66.5 cm; DUZM_MF_003C.2, TL 65.0 cm, of Chiloscyllium hasseltii are keeping at the Museum of Department of Zoology, University of Dhaka, Bangladesh, and has public access. The DNA barcoding data can be retrieving from the NCBI GenBank.



Mitochondrial Cytochrome c Oxidase Subunit 1


Deoxyribonucleic Acid


Polymerase Chain Reaction


National Center for Biotechnology Information


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We acknowledge the financial support from the Ministry of Education, Government of the People’s Republic of Bangladesh as a grant for advanced research in Education (Grants No. MRS2017448).

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Authors and Affiliations



Ahmed MS initiated the project, acquired funding, managed project administration, specimen curation and internal reports, performed the taxonomic analyses, and prepared the whole manuscript. Akhand MAA Participated in funding acquisition, fieldwork, and logistics. Datta SK and Saha T performed field collection, generated and analyzed molecular sequences, and participated in the writing of the final manuscript. Ahmed S and Sanzida NJ contributed laboratory analyses, participated in generating of sequences and made contribution to the manuscript. All authors reviewed the manuscript.

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Correspondence to Md. Sagir Ahmed.

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Datta, S.K., Saha, T., Sanzida, N.J. et al. New Distributional Record of Hasselt’s Bamboo Shark Chiloscyllium hasseltii (Orectolobiformes: Hemiscylliidae) from Bangladesh Waters. Thalassas 36, 291–295 (2020).

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