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Mexican hornshark : ウィキペディア英語版 | Mexican hornshark
The Mexican hornshark, ''Heterodontus mexicanus'', is a bullhead shark of the family Heterodontidae. This shark is grey-brown in color, with black spots scattered on the fins and body. It has a cylindrical trunk, conical head, and small spiracles behind the eyes. The snout of the Mexican hornshark is very round and blunt. Like all members of the order Heterodontiformes, this shark has fin spines in front of both of its dorsal fins. The first dorsal fin originates before the pectoral fins, while the second dorsal fin originates behind the pelvic fins. The Mexican hornshark reaches a maximum length of around 70 cm, but usually reaches between 50 and 60 cm on average. Young hornsharks hatch at around 14 cm. 〔(【引用サイトリンク】title=Mexican hornshark (Heterodontus mexicanus) )〕 ==Habitat and Range== Mexican hornsharks are distributed throughout the coast of the Eastern Pacific, mainly around southern Baja California, and possibly as south as Peru. The rocky bottoms, coral reefs, and sandy areas of the littoral zone create the habitat of this hornshark. The Mexican hornshark can be found at a maximum depth of 50 meters, but are usually found down to 20 meters.〔(【引用サイトリンク】title=Marine Species Identification Portal : Mexican hornshark - Heterodontus mexicanus )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Mexican hornshark」の詳細全文を読む
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