Author: Müller and Henle, 1839
A small, very slim requiem shark with a long snout, big eyes with posterior notches, labial furrows very short or rudimentary, small, oblique-cusped teeth without serrations or cusplets, first dorsal origin behind pectoral free rear tips, second dorsal much smaller than first, second dorsal origin about over anal insertion, anal larger than second dorsals with very long preanal ridges. Colour greyish to brownish without a prominent colour pattern.
Body rather slender. Head fairly narrow, only moderately depressed, not trowelshaped; snout narrowly parabolic in dorsoventral view, very long, with preoral length greater than internarial space and mouth width; eyes large, with posterior notches; spiracles absent or minute and vestigial; no papillose gillrakers on internal gill openings; nostrils small, internarial space about 4 to 5 times nostril width; anterior nasal flaps very short, narrowly triangular, and not tubular; labial furrows very short to rudimentary, with uppers shorter than lowers and falling far behind eyes; teeth similar in upper and lower jaws, anteroposteriors with slender oblique cusps and distal blades but no cusplets or serrations; cusps of lower teeth not prominently protruding when mouth is closed; 25 to 28/24 to 28 rows of teeth. Interdorsal ridge absent or rudimentary; no dermal keels present on caudal peduncle; upper precaudal pit transverse and crescentic. First dorsal origin behind pectoral rear tips, midbase about equidistant between pectoral and pelvic bases, and free rear tip usually anterior to pelvic origins but occasionally over them; second dorsal fin much smaller than first, its height 1/4 of first dorsal height or less; its origin about over anal insertion; pectoral fin moderately broad and triangular, slightly falcate, pectoral length from origin to free rear tip 2/3 to 3/4 of pectoral anterior margin; pectoral origins under interspace between third and fourth gill slits; anal much larger than second dorsal, with very long preanal ridges and a straight or slightly concave posterior margin. Colour light grey, yellowish or brownish grey above, without a colour pattern. Smail sharks, adults not exceeding 1 m.
Confined to the Indo-West Pacific: South Africa, Madagascar, Scychelles and Red Sea east to India, Sri Lanka, Indonesia, China, Taiwan Island, Japan, The Philippines, Australia (Queensland and probably other states).
Habitat and Biology:
A small, common tropical inshore shark of the continental and insular shelves, found in moderately shallow, clear waters, at depths from 7 to 80 m; occurs near the surface and at the bottom. Viviparous, with a yolk-sac placenta; number of young 2 to 4 per litter. Feeds on small bony fishes, includinganchovies and croakers, and shrimp and cuttle- fish. Harmless to people.
Maximum 91 cm, males maturing between 62 and 66 cm and reaching at least 85 cm; females mature at 79 cm and reaching at least 91 cm; size at birth about 40 to 43 cm.
Interest to Fisheries:
This small shark is caught in artisanal and smallscale commercial fisheries, and is especially important in southeastern India. It is taken in floating and bottom gillnets and with pelagic and bottom longlines; its meat is utilized fresh for human consumption.
Holotype: Zoologisches Museum, Humboldt Universitat, Berlin, ISZZ 4479, 315 mm fetus. Type Locality: Unknown.