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Potamotrygon falkneri, the largespot river stingray or reticulated freshwater stingray, is a species of freshwater stingray in the family Potamotrygonidae from tropical and subtropical South America. [ 1 ] [ 2 ] It is sometimes seen in the aquarium trade, but requires a very large tank.
Potamotrygon is a genus of freshwater stingrays in the family Potamotrygonidae native to the rivers of South America, [1] and sometimes seen in the aquarium trade. [2] It inhabits rivers of tropical and subtropical climates, especially those of the Amazon basin and is virtually present in all South American countries, except for Chile.
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]
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.
The reticulate whipray or honeycomb stingray (Himantura uarnak) is a species of stingray in the family Dasyatidae. It inhabits coastal waters in the western Indian Ocean including the Red Sea , Natal and the Arabian Sea; also a Lessepsian transmigrant in the eastern Mediterranean.
The short-tailed river stingray is circular in shape and humped in the back. [7] The species can reach about 1.9 m (6 ft) in disc diameter and 220 kg (490 lb) in weight, making it the largest freshwater species in the family Potamotrygonidae. [3] [4] [8] They have a dark pattern on their backs, probably used as camouflage. [7]
The yellow stingray has a round pectoral fin disc and a short tail with a well-developed caudal fin. It has a highly variable but distinctive dorsal color pattern consisting of either light-on-dark or dark-on-light reticulations forming spots and blotches, and can rapidly change the tonality of this coloration to improve its camouflage.
The Kapala stingaree (Urolophus kapalensis) is a species of stingray in the family Urolophidae, endemic to inshore waters off southeastern Queensland and New South Wales.It is commonly found on and around rocky reefs at a depth of 10–130 m (33–427 ft).