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FAO Species Identification Guide for Fishery Purposes Western

FAO Species Identification Guide for Fishery Purposes Western

FAO Species Identification Guide for Fishery Purposes Western

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Hemiscylliidae 1255<br />

Chiloscyllium indicum (Gmelin, 1789)<br />

Frequent synonyms / misidentifications: Chiloscyllium colax (Meuschen, 1781) / Chiloscyllium<br />

plagiosum (Bennett, 1980).<br />

<strong>FAO</strong> names: En - Slender bambooshark; Fr - Requin-chabot élégant; Sp - Bamboa elegante.<br />

Diagnostic characters: Small sharks, body slender, with low lateral<br />

ridges, precaudal tail slender, longer than head and trunk. Snout narrowly<br />

rounded or almost pointed; 5 small gill slits; spiracles large and below eyes;<br />

eyes hardly elevated, nostrils subterminal, with short barbels, nasoral<br />

grooves and circumnarial grooves; mouth small, transverse, and well in<br />

front of eyes, teeth small, similar in both jaws, with a single small cusp. Two<br />

dorsal fins, about as large as pelvic fins and without attenuated,<br />

projecting free rear tips; first dorsal-fin origin over inner margins of<br />

pelvic tins and behind pelvic-fin insertions; second dorsal fin almost as<br />

large as first; anal fin long, low, and broadly rounded, with its origin far<br />

behind free rear tip of second dorsal fin and with its insertion at lower<br />

caudal-fin origin, caudal fin strongly asymmetrical with a pronounced<br />

subterminal notch but without a ventral lobe; caudal fin less than 1/3 the<br />

length of rest of shark. Caudal peduncle cylindrical, without keels or<br />

precaudal pits. Intestinal valve of ring type. Colour: light brown above, cream below, with numerous<br />

dark spots on body, tail, and fins, these often <strong>for</strong>ming indistinct vertical bars and saddles.<br />

Size: Maximum total length about 65 cm.<br />

Habitat, biology, and fisheries: A common, but little-known inshore sluggish bottom dweller. Oviparous,<br />

deposits eggs in small, oval egg cases on bottom. Probably feeds mainly on invertebrates. Caught in bottom<br />

trawls and in fixed bottom gill nets, drifting bottom gill nets, and occasionally pelagic gill nets; utilized fresh<br />

<strong>for</strong> human consumption, but relatively unimportant to fisheries in the area.<br />

Distribution: Indo-West<br />

Pacific from the Arabian Sea<br />

eastward to India, Sri Lanka,<br />

Singapore, Thailand,<br />

Indonesia, Viet Nam, Taiwan<br />

Province of China, the<br />

Philippines, Solomon Islands,<br />

and possibly Korea and<br />

Japan.<br />

?<br />

?<br />

? ?<br />

ventral view of head

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