- Potamotrygon
Taxobox | name = "Potamotrygon"
image_width = 240px
image_caption =Ocellate river stingray , "Potamotrygon motoro"
regnum =Animalia
phylum =Chordata
classis =Chondrichthyes
subclassis =Elasmobranchii
ordo =Rajiformes
familia =Potamotrygonidae
genus = "Potamotrygon"
subdivision_ranks = species
subdivision = See text for species.
genus_authority = (Müller & Henle, 1841)"Potamotrygon" is a genus of freshwater
stingray s native to the rivers ofSouth America . As of July 2006,FishBase lists seventeen distinct species. The type species is "P. hystrix".Freshwater stingrays of the genus "Potamotrygon" are sometimes kept as exotic
aquarium fish; though freshwater stingray of other genera do appear in the trade, most are from this genus. They are best kept with a deep, sandy substrate, in which they bury themselves, often with only the eyes visible. They are not territorial with other animals and can be kept in groups, provided a large enough aquarium is provided. They are carnivorous bottom feeders and require strong filtration as they are rather sensitive to water conditions.cite book | title = Complete Encyclopedia of the Freshwater Aquarium | last = Dawes | first = John | publisher = Firefly Books Ltd | location = New York | year = 2001 | id = ISBN 1-55297-544-4.] Many species of stingray have been bred in captivity,Fact|date=February 2007 and males can be determined by the presence ofclasper s as in other Chondrichthyans.Like other stingrays, the fishes of this genus have
venom ous barbs at the base of their tails, and are dangerous species to humans. [FishBase_genus|genus=Potamotrygon|year=2007|month= Mar] ] It is said that the natives of South America fear the stingray more than they do thepiranha . [cite book | title = Exotic Tropical Fishes | last = Axelrod | first = Herbert, R. | publisher = T.F.H. Publications. | year = 1996 | id = ISBN 0-87666-543-1]An undescribed type is referred to as the Itaituba river stingray or P14 (a P-number system is sometimes used by aquarists, similar to the
L-number system). This fish is superficially similar to "P. henlei" and "P. leopoldi" except for smaller spots and in larger number.pecies list
*"
Potamotrygon boesemani " Rosa, de Carvalh & Wanderley, 2008 [cite journal|title="Potamotrygon boesemani" (Chondrichthyes: Myliobatiformes: Potamotrygonidae), a new species of Neotropical freshwater stingray from Surinam| author = Rosa, de Carvalh & Wanderley|journal=Neotropical Ichthyology|volume=6|issue = 1|pages=1-8|year=2008]
*Short-tailed river stingray , "P. brachyura" (Günther, 1880).
*Vermiculate river stingray , "P. castexi" (Castello & Yagolkowski, 1969).
*Thorny river stingray , "P. constellata" (Vaillant, 1880).
*Largespot river stingray , "P. falkneri" (Castex & Maciel, 1963).
*Bigtooth river stingray , "P. henlei" (Castelnau, 1855).
*Porcupine river stingray , "P. hystrix" (Müller & Henle, 1834).
*White-blotched river stingray , "P. leopoldi" (Castex & Castello, 1970).
*Magdalena river stingray , "P. magdalenae" (Duméril, 1865).
* "P. marinae", (Deynat, 2006)
*Ocellate river stingray , "P. motoro" (Müller & Henle, 1841).
*Red-blotched river stingray , "P. ocellata" (Engelhardt, 1912).
*Smooth back river stingray , "P. orbignyi" (Günther, 1880).
*Rosette river stingray , "P. schroederi" (Fernández-Yépez, 1957).
* "P. schuhmacheri" (Castex, 1964).
*Raspy river stingray , "P. scobina" (Garman, 1913).
*Parnaiba river stingray , "P. signata" (Garman, 1913).
*Maracaibo river stingray , "P. yepezi" (Castex & Castello, 1970).References
ee also
*"
Potamotrygonocotyle "
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