|
Règne :
|
Animalia
|
|
Embranchement :
|
Chordata
|
|
Classe :
|
Elasmobranchii
|
|
Ordre :
|
Rajiformes
|
|
Famille :
|
Rajidae
|
|
Genre :
|
Leucoraja
|
|
Espèce :
|
circularis
|
| Nom Français : |
Raie circulaire
|
| Nom Vernaculaire : |
Sandy ray
|
|
Description :
|
snout very short; disc roundish with greatly rounded outer corners, tail conspicuously longer than body. Upper surface entirely rough with prickles on pectoral fins and many thornlets concentrated on head and on hind part of disc, but bare patches on pectorals in adult males. A complete row of 5-9 thorns around inner margin of eye in larger specimens, and a large triangle of thorns on nape/shoulder region; also, several irregular parallel rows of prominent thorns from shoulder to dorsal fins (as well as in young, which also have a median row along body and tail and separate orbital, nape and shoulder thorns); underside smooth. Colour: upper surface ash-grey to dark brown, clouded darker or paler, tail often with dark crossbars, young with more or less distinct dark blotches; dorsal pattern rather variable; underside predominantly white, but usually with irregular greyish to brown spots on tail, on pelvic fins and along margins of disc. Size: to about 55 cm TL.
|
|
Auteurs & dates :
|
Leucoraja circularis (Couch, 1838)
|
|
Recherche des images :
|
|
|
Photo
|
