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Spotted stingaree
The spotted stingaree (''Urolophus gigas'') is an uncommon species of stingray in the family Urolophidae, endemic to shallow waters along the coast of southern Australia. It favors rocky reefs and seagrass beds. This species can be readily identified by its nearly circular, dark-colored pectoral fin disc, adorned with a complex pattern of white or cream spots. Its eastern and western forms differ slightly in coloration and have been regarded as separate species. There is a skirt-shaped curtain of skin between its nostrils. Its tail is fairly thick and terminates in a short leaf-shaped caudal fin; a relatively large dorsal fin is present just in front of the stinging spine.
Rather reclusive, at least during the day, the spotted stingaree preys largely on crustaceans. It is aplacental viviparous: female bear litters of up to 13 pups and supply them with histotroph ("uterine milk") during gestation. Relatively inoffensive towards humans, the International Union for Conservation of Nature (IUCN) has listed this species under Least Concern, citing the overall low level of fishing activity across its range. Furthermore, it is sheltered from commercial fishing gear by the rough terrain of its favored habitats.
==Taxonomy==
The first known specimen of the spotted stingaree was collected off Port Noarlunga in South Australia, and described by Trevor Scott in a 1954 issue of the scientific journal ''Records of the South Australian Museum''. The specific epithet ''gigas'' is Greek for "giant". The eastern and western forms of this ray differ slightly in coloration; the western form, called Sinclair's stingaree, has been considered a distinct separate species by some authors.
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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