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Brown stingaree : ウィキペディア英語版
Brown stingaree

The brown stingaree (''Urolophus westraliensis'') is a little-known species of stingray in the family Urolophidae, found at a depth of on the outer continental shelf off northern Western Australia. This species has a rhomboid pectoral fin disc colored light yellow or brown, sometimes with three faint, darker, transverse bars. Its nostrils have a skirt-shaped curtain of skin between them. Its tail ends in a leaf-shaped caudal fin and either lacks or has poorly developed lateral skin folds and a dorsal fin. The maximum known length is . The International Union for Conservation of Nature (IUCN) has listed the brown stingaree under Least Concern, as there is negligible fishing pressure across most of its range.
==Taxonomy==
Peter Last and Martin Gomon described the brown stingaree in a 1987 issue of ''Memoirs of the National Museum of Victoria''. The type specimen is a male across, trawled from north of Port Hedland in Western Australia (hence the specific epithet ''westraliensis'') by the FRV ''Soela'' on 2 April 1982. This species is closely related to the mitotic stingaree (''U. mitosis'').

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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