Potamotrygonidae | 台北市立動物園資訊網
RiverstingraysorfreshwaterstingraysareNeotropicalfreshwaterfishesofthefamily...Pfauenaugen-Stechrochen-Ocellateriverstingray-Potamotrygonmotoro....Riverstingraysarealmostcircularinshape,andrangeinsizefrom...Freshwaterst
Family of cartilaginous fishes
River stingrays or freshwater stingrays are Neotropical freshwater fishes of the family Potamotrygonidae in the order Myliobatiformes, one of the four orders of batoids, cartilaginous fishes related to sharks. They are found in rivers in tropical and subtropical South America (freshwater stingrays in Africa, Asia and Australia are in another family, Dasyatidae). A single marine genus, Styracura, of the tropical West Atlantic and East Pacific are also part of Potamotrygonidae. They are generally brownish, greyish or black, often with a mottled, speckled or spotted pattern, have disc widths ranging from 31 to 200 centimetres (1.0–6.6 ft) and venomous tail stingers. River stingrays feed on a wide range of smaller animals and the females give birth to live young. There are more than 35 species in five genera.
Distribution and habitat[edit] ...Freshwater Stingray Care Sheet | 台北市立動物園資訊網
Freshwater Aquarium Stingray • (Types | 台北市立動物園資訊網
Ocellate river stingray | 台北市立動物園資訊網
Potamotrygonidae | 台北市立動物園資訊網
Ocellate river stingray | 台北市立動物園資訊網
Keeping Freshwater Stingrays (Types, Care | 台北市立動物園資訊網
Keeping Freshwater Stingrays | 台北市立動物園資訊網
Motoro Stingray Care Guide: Tank Size | 台北市立動物園資訊網
【珍珠魟】:江魟科;
身體呈圓盤狀,背部色彩由褐色至淡褐色,上有圓形奶油狀的斑點散布,尾柄的棘刺為中空的構造,有分泌毒液的毒腺及儲藏毒液的...