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Blackedge whipray
The blackedge whipray (''Himantura marginata'') is a little-known species of stingray in the family Dasyatidae, found in the coastal waters of the Bay of Bengal and the Gulf of Mannar. Attaining a disc width of , this species has a diamond-shaped disc with two small concavities on either side of the snout tip, and a long, whip-like tail without tail folds. It is characterized by large thorns with star-shaped bases scattered over the disc, and by the wide, black marginal bands on the underside of the disc. The International Union for Conservation of Nature (IUCN) currently lacks sufficient data to assess the blackedge whipray beyond Data Deficient.
==Taxonomy==
English zoologist Edward Blyth described the blackedge stingray as ''Trygon marginatus'', in an 1860 issue of the ''Journal and Proceedings of the Asiatic Society of Bengal''. Blyth based his account on a specimen across obtained from a fish market in Calcutta, which has since been lost. The specific epithet ''marginatus'' means "enclosed with a border" in Latin. Subsequent authors have placed this species in the genus ''Himantura''.
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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