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The ocellate river stingray (Potamotrygon motoro), also known as the peacock-eye stingray or black river stingray, is a species of freshwater stingray in the family Potamotrygonidae. It was the first species to be described in the family and is also the most widespread, ranging throughout much of the Río de la Plata , Amazon , Mearim and ...
Dasyatis marmorata, the marbled stingray, is a species of stingray of the family Dasyatidae. Its geographic range covers the central and south-eastern Atlantic, from Morocco to South Africa. [ 1 ] It is also present in the coastal waters of southern Mediterranean Sea and the Levantine Basin.
The marbled stingray has a thin, oval-shaped pectoral fin disc longer than wide. The snout is long and triangular, with the pointed tip projecting from the disc. The eyes are small, and immediately followed by spiracles over twice their diameter. There is a curtain of skin between the nares with a fringed trailing margin.
Stingray City Facts. For over a hundred million years, the stingray has roamed the world's oceans as an almost mythological animal: extraordinarily graceful, yet potentially lethal.
Potamotrygon leopoldi is part of a species complex of blackish river rays with contrasting pale spots found in the Tapajós, Xingu and Tocantins basins [3]. River stingrays are almost circular in shape, and range in size from Potamotrygon wallacei, which reaches 31 cm (1.0 ft) in disc width, [9] to the chupare stingray (S. schmardae), which grows up to 2 m (6.6 ft) in disc width. [10]
A diversity of stingray fossils is known from the Eocene Monte Bolca formation from Italy, including the early stingaree Arechia, as well as Dasyomyliobatis, which is thought to represent a transitional form between stingrays and eagle rays, and the highly unusual Lessiniabatis, which had an extremely short and slender tail with no sting.
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Dasyatis chrysonota A. Smith, 1828 (blue stingray) Dasyatis gigantea (Lindberg, 1930) (giant stumptail stingray) Dasyatis hypostigma H. R. S. Santos & M. R. de Carvalho, 2004 (groovebelly stingray) Dasyatis marmorata Steindachner, 1892 (marbled stingray) Dasyatis pastinaca Linnaeus, 1758 (common stingray) Dasyatis tortonesei Capapé, 1975 ...