''Guyanancistrus niger'' is a
species of
catfish in the family
Loricariidae that is of disputed classification. It is native to
South America, where it occurs in the
Oyapock basin in
French Guiana. Though reportedly uncommon, it is typically seen in
rapids
Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence.
Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. ...
where the species ''
Pseudancistrus barbatus
''Pseudancistrus barbatus'', commonly known as the bearded catfish, is a species of catfish in the family Loricariidae. It is native to South America, where it occurs in the basins of the Oyapock, the Mana River, the Maroni, the Suriname River ...
'' is also present, although the ecological relationship between the two is not known. The species reaches in
standard length
Fish measurement is the measuring of individual fish and various parts of their anatomies. These data are used in many areas of ichthyology, including taxonomy and fisheries biology.
Overall length
* Standard length (SL) is the length of a fish m ...
, although it has been reported to reach 25.4 cm (10 inches), and it may be a facultative air-breather.
''Guyanancistrus niger'' was initially described as a species of ''
Hemiancistrus'' in 1926. It has subsequently been classified under ''
Guyanancistrus
''Guyanancistrus'' is a genus of suckermouth armored catfishes.
Species
There are currently 8 recognized species in this genus:
* '' Guyanancistrus brevispinis'' ( Heitmans, Nijssen & Isbrücker, 1983)
* ''Guyanancistrus brownsbergensis'' Mo ...
'', ''
Lasiancistrus
''Lasiancistrus'' is a genus of suckermouth armored catfishes. They are native to South America and Panama.
Taxonomy
''Lasiancistrus'' was first described as a subgenus of ''Ancistrus'' in 1904, including ''A. heteracanthus'', ''A. pictus'', '' ...
'', and ''
Pseudancistrus
''Pseudancistrus'' is a genus of suckermouth armored catfishes native to South America.
Taxonomy
''Pseudancistrus'' is a genus in the tribe Ancistrini of the subfamily Hypostominae. It was described by Pieter Bleeker in 1862, and redescribed by ...
'', where it is still listed by sources such as
FishBase
FishBase is a global species database of fish species (specifically finfish). It is the largest and most extensively accessed online database on adult finfish on the web. .
[ Despite these reclassifications, a 2018 taxonomic review of ''Guyanancistrus'' recognized ''G. niger'' as a valid member of the genus.][Fisch-Muller, Sonia & Mol, Jan & Covain, Raphael. (2018). An integrative framework to reevaluate the Neotropical catfish genus ''Guyanancistrus'' (Siluriformes: Loricariidae) with particular emphasis on the ''Guyanancistrus brevispinis'' complex. PLOS ONE. 13. e0189789. 10.1371/journal.pone.0189789.]
''Guyanancistrus niger'' sometimes appears in the aquarium trade, where it is often referred to either as the black wing pleco or by its associated L-number
The L-number system is a semi-scientific classification system of catfish based on photographs of shipments of tropical catfish of the family Loricariidae published by the German aquarium magazine DATZ (Die Aquarien- und Terrarienzeitschrift (The ...
, which is L-039.
References
{{Taxonbar, from=Q5910730
Fish described in 1926
Freshwater fish of South America
Hypostominae