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flagtail swellshark
The flagtail swellshark (''Cephaloscyllium signourum'') is a little-known species of catshark, belonging to the family Scyliorhinidae, found at a depth of off northeastern Queensland, and possibly also nearby islands. This stout-bodied shark has a short, broad, and flattened head with a capacious mouth. Adults have a variegated brown coloration with 9–10 darker dorsal saddles and "V"-shaped blotch at the tip of the upper caudal fin lobe. Juveniles are yellow with narrow brown bars instead of saddles, and a distinctive marking between the spiracles shaped like two loops connected by a line. Like other swellsharks, this species can inflate its body when threatened.
==Taxonomy==
In 1994, Commonwealth Scientific and Industrial Research Organisation (CSIRO) chief researchers Peter Last and John Stevens recognized an undescribed Australian swellshark with a variegated color pattern, which they provisionally named ''Cephaloscyllium'' "sp. E". Later investigation revealed that "sp. E" in fact constituted two species: the speckled swellshark (''C. speccum'') and the flagtail swellshark, which was formally described in a 2008 CSIRO publication by Peter Last, Bernard Séret, and William White.〔 In reference to its distinctive caudal fin marking, the shark was given the specific epithet ''signourum'' from the Latin ''signum'' ("flag") and the Greek ''oura'' ("tail"). The type specimen is a long female collected at the Lihou Reef and Cays, near Queensland.〔
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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