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houndfish
The houndfish, ''Tylosurus crocodilus'', is a gamefish of the family Belonidae. It is the largest member of its family, able to grow up to and reach . It is also often called the crocodile needlefish.
==Description==
While the houndfish has no spines, its dorsal fin has 21–25 soft rays, and its anal fin has 19–22. They are also known to have 80–86 vertebrae.〔 A key way of distinguishing the houndfish from other members of the ''Tylosurus'' genus is that the houndfish's teeth point anteriorly when the fish is a juvenile. The teeth of other species are straight at all ages.〔Collette, B.B. 1999 Belonidae. Needlefishes. p. 2151-2161. In: K.E. Carpenter and V.H. Niem (eds.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Pacific. Volume 4. Bony fishes part 2 (Mugilidae to Carangidae). FAO, Rome.〕 The houndfish also has a more stout, cylindrical body and a shorter head than other needlefishes.〔 They have dark blue backs and silver-white sides and are plain white ventrally.〔Collette, B.B. 1986 Belonidae p. 385-387. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin.〕 A houndfish has a distinct keel on the caudal peduncle, and the caudal fin itself is deeply forked.〔 Juvenile houndfish possess an elevated, black lobe on the posterior of their dorsal fins.〔 The longest recorded houndfish was ,〔Sommer, C., W. Schneider and J.-M. Poutiers 1996 FAO species identification field guide for fishery purposes. The living marine resources of Somalia. FAO, Rome. 376 p.〕 and the largest recorded weight was .〔IGFA 2001 Database of IGFA angling records until 2001. IGFA, Fort Lauderdale, USA.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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