|
The shaggy frogfish, ''Antennarius hispidus'', is a marine fish in the family Antennariidae. ==Description== The shaggy frogfish grows up to in length. Like other members of its family,it has a globulous, extensible body, and its soft skin is covered with small dermal spinules. The skin can also be adorned, but not systematically, with cutaneous appendages reminding one of hairs. Its large mouth is prognathous and allows it to gobble up prey as large as it. The coloring of their bodies is extremely variable because they always tend to match their living environments. Frogfishes have the capacity to change coloration and pigment pattern in few weeks. However, the dominant coloration goes from yellow to brownish-orange, passing through a whole range of related nuances. Their bodies and fins can be endowed with roughly parallel, dark stripes, some radiating outward from the eye. The belly is free from stripes.〔Pietsch & Grobecker, ‘’Frogfishes of the world’’, Stanford University Press, 1987,ISBN 9780804712637〕 The first dorsal spine, called illicium, is modified and is used as a fishing lure. Its extremity is endowed with a characteristic oval esca composed of a multitude of slender filaments in a tuft. This lure is a way to separate easily ''A. hispidus'' from ''Antennarius striatus'', which presents similar physical characteristics (stripes, coloration, cutaneous appendages)and with which it is often confused.〔http://www.frogfish.ch/species-arten/Antennarius-hispidus.html〕 The illicium has the same length as the second dorsal spine. The second dorsal spine is practically straight and is mobile, and the third one is bent towards the back of the body. They are well separated from each other and also from the dorsal fin.〔 The pectoral fins are angled and help, with the pelvic fins, to move the frogfish on the bottom and to keep a stable position for ambush. 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「Shaggy frogfish」の詳細全文を読む スポンサード リンク
|