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Chiloscyllium griseum:   (click for more)

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Synonyms
Other Combinations:   (Müller and Henle, 1838).
FAO Names
En - Grey bambooshark, Fr - Requin-chabot gris, Sp - Bamboa gris.
3Alpha Code: ORR     Taxonomic Code: 1070401503
Scientific Name with Original Description
Chiloscyllium griseum  Müller and Henle, 1838d, Syst. Beschr. Plagiost., pt. 1: 19. Syntypes: "Ein Exemplar aus Malabar durch Dussumier; 6 Exemplare von Pondichery durch Belanger, in Weingeist, in Paris. Indien, Japan". Lectotype: Museum National d'Histoire Naturelle, Paris, MNHN-1010, 374 mm immature male, Malabar, Kerala, India, designated by Dingerkus and DeFino, 1983, Bull. American Mus. Nat. Hist. 176(1): 12.
Diagnostic Features
fieldmarks: Mouth well in front of eyes; spineless dorsal fins far posterior on tail, greatly elongated thick precaudal tail, long and low anal fin just anterior to caudal fin, no lateral ridges on trunk, dorsal fins with straight or convex posterior margins, first dorsal-fin origin about opposite rear halves of pelvic-fin bases; often no colour pattern in adults, but young with transverse dark bands that lack black edging.

Prepectoral length 16.5 to 19.5% of total length. Snout rounded anteriorly. Eyes moderately large, lengths 1.3 to 2.2% of total length. Body and tail fairly stout. No lateral ridges on trunk and predorsal and interdorsal ridges not prominent. Interdorsal space fairly short, slightly greater than first dorsal-fin base and 8.7 to 11.5% of total length. Snout to vent length 34.5 to 38.3% of total length; distance from vent to tail tip 58.1 to 64.4% of total length.  Dorsal fins fairly large and rounded, subequal to or larger than pelvic fins, and without concave posterior margins and projecting free rear tips. First dorsal-fin origin over rear halves of pelvic-fin bases, first dorsal-fin base slightly longer than second dorsal-fin base, first dorsal-fin height 6.2 to 8.2% of total length. Second dorsal-fin height 7.4 to 9.1% of total length. Origin of anal fin slightly behind free rear tip of second dorsal fin, anal-fin length from origin to free rear tip slightly less than hypural caudal lobe from lower caudal-fin origin to subterminal notch, anal-fin base less than six times anal-fin height.  Total vertebral count from 156 to 170 (mean = 161.7, n = 14).  Intestinal valve count 15 to 19 (n = 2).  Colour pattern absent in adults but young with prominent dark saddle-marks without black edging. 
Geographical Distribution

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Indo-West Pacific: Pakistan, India, Sri Lanka, Malaysia, Thailand; nominal from Indonesia, China, Japan, Philippines, and Papua New Guinea but possibly based in part on Chiloscyllium hasselti.
Habitat and Biology
An inshore bottom shark, on rocks and in lagoons.Depths 5 to 80 m.

Common where it occurs.
Oviparous, deposits eggs in small oval egg cases on the bottom.  Probably feeds mainly on invertebrates.
Size
Maximum total length at least 77 cm. Freeliving individuals down to at least 12.2 cm, size at hatching uncertain; males maturing between 45 and 55 cm.
Interest to Fisheries
Regularly taken in inshore fisheries off Pakistan, India and Thailand, and utilized for human food. Kept in public aquaria in the United States.

Conservation Status : Conservation status uncertain.
Local Names
Widespread : Blackbanded bamboo shark .
Malaysia : Ikan tjutjot ,  Ikan tjutjot pisang .
Indonesia : Ikan tjutjot ,  Ikan tjutjot pisang .
Iran : Bambak gorbeh (Possibly not this species).
Widespread : Blackbanded catshark .
Japan : Shimazame .
Remarks
This species was described as new by Müller and Henle without mention of the earlier Scyllium griseum van Hasselt, 1823. Fowler (1941) considered van Hasselt's species as lacking a description. Compagno (1984) listed it as a tentative nomen nudum, and noted that quite likely Müller and Henle based their name Chiloscyllium griseum on the earlier Scyllium griseum, as they were apparently aware of van Hasselt's work in Java. Dingerkus and DeFino (1983) considered van Hasselt's species as valid and separable from Müller and Henle's Chiloscyllium griseum although a nomen nudum and not available as such, and so resurrected the earliest valid name based on it, Chyloscyllium hasselti Bleeker, 1852 (see below).
Source of Information
Sharks of the world An annotated and illustrated catalogue of shark species known to date. Volume 2 Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). Leonard J.V. Compagno 2001.  FAO Species Catalogue for Fishery Purposes. No. 1, Vol. 2. Rome, FAO. 2001. p.269.
Bibliography
Compagno, 1984
D. Didier (pers. comm.)
Dibelius, 1993
Dingerkus & DeFino, 1983
Fowler, 1941
Garman, 1913
Gubanov & Schleib, 1980
Herre, 1953
Nakaya & Shirai, 1984
 
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