A new record of yellowmargin triggerfish (Pseudobalistes flavimarginatus) (Tetraodontiformes: Balistidae) from the Bay of Bengal of Bangladesh proximity

Abstract

Pseudobalistes flavimarginatus (Ruppell, 1829) is a triggerfish species belonging to the Family Balistidae under the Order Tetraodontiformes. It was reported at the very first time from the region proximal to the south patches fishing ground of the Bay of Bengal (Bangladesh). The fish is known as Yellowmargin triggerfish due to the presence of body colour, yellow and gray. The total length of the voucher fish is 39.95 cm (Standard length 32.5 cm) and 1540 g by weight. It has a deep, moderately compressed body with inconspicuous lateral lines, encased in very thick and hard skin with large boney scales (except rostral region). The fish body bears two dorsal fins with three visible spines. Dorsal, anal and pectoral-fin rays are soft and branched. The taxonomic formula for the species is D III/27; A 0/25; P 15; V I/7; C 15; Lt. 35-36. Gill openings are moderately short, vertical to oblique slit in front of pectoral-fin base. Concerning distribution, the species is not reported before in Bangladesh and not even recorded from other maritime Bay of Bengal localities of Eastern India and Sri Lanka; whereas it was already reported in other bio-geographical regions (detailed in article). The voucher specimen is preserved at the Marine Fisheries Academy Museum, Bangladesh for further reference use.J. Biodivers. Conserv. Bioresour. Manag. 2017, 3(2): 85-90