Common names
Bangladeshi guitarfish

Short Description
Original diagnosis of HABIB & ISLAM, 2021 [29820]: Moderately large, brownish or greyish guitarfish with a narrowly wedge-shaped disc, moderately long, triangular and bluntly pointed snout, and broad oblique nostrils with the narrow anterior opening. Disc thickened centrally, length 1.30–1.45 in width; Snout acute, angle 31–40°, tip bluntly pointed and never protruding forward as a distinct lobe. Orbit relatively large in adults, diameter 8.19–11.62 in preorbital length, 2.25–2.69 in interorbital distance. Rostral ridges almost joined along their entire length; margin of cranium sharply demarcated before eyes. Spiracular folds very short and widely separated. Nostrils about half of the mouth width, subequal (0.98–1.33) to internasal width; ~55–57 nasal lamellae; anterior nasal flaps slightly penetrating into internasal space, their interspace equal to 2.20–2.61 in length of the posterior nasal aperture. Skin rough, densely covered with small denticles, more coarsely granular on the dorsal surface than ventrally, enlarged between orbits and in a distinct band between nape and first dorsal fin. Pair of 2 large thorns on each shoulder and similar thorns in irregular, median row(s) along mid-line. Tail longer, length 1.15–1.48 in disc length; dorsal fins narrowly spaced, interspace 1.32–2.11 in base length of the first dorsal fin. Clasper length in adult male 4.37–5.70 in total length. Morphometric measurements are given in Table 1.

Distribution
Bay of Bengal, Bangladesh, may also occur in the adjacent sea areas like Andaman Sea, Arabian Sea, Malacca Strait and the Gulf of Thailand.[29820]

Size / Weight / Age
TL (max): 933 mm [29820]

Habitat
marine; shallow coastal waters [29820]

Dentition
Teeth small, blunt, crowns rhomboidal with weak, pointed posterior cusps; upper and lower jaw teeth similar in shape and size, tooth rows in upper jaw 84 (58–69) [29820]

Remarks
shark-references Species-ID=16144;