''Pseudolithoxus kelsorum'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

catfish Catfish (or catfishes; order Siluriformes or Nematognathi) are a diverse group of ray-finned fish. Named for their prominent barbels, which resemble a cat's whiskers, catfish range in size and behavior from the three largest species alive, ...

in the family Loricariidae. It is native to

South America South America is a continent entirely in the Western Hemisphere and mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere at the northern tip of the continent. It can also be described as the southe ...

, where it is known only from a single site in the

Orinoco The Orinoco () is one of the longest rivers in South America at . Its drainage basin, sometimes known as the Orinoquia, covers , with 76.3 percent of it in Venezuela and the remainder in Colombia. It is the fourth largest river in the wor ...

drainage, located above the Maipures Rapids and south of the Atures Rapids (near the

Atures Municipality The Atures Municipality ( es, Municipio Atures) is one of the seven municipalities (municipios) that makes up the southern Venezuelan state of Amazonas and, according to the 2011 census by the National Institute of Statistics of Venezuela, the m ...

) in the

Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...

n state of Amazonas. The species reaches 6.6 cm (2.6 inches) SL. ''P. kelsorum'' appears in the aquarium trade, where it is usually referred to either as the banded pancake pleco (presumably referencing its patterning and its

dorsoventrally Standard anatomical terms of location are used to unambiguously describe the anatomy of animals, including humans. The terms, typically derived from Latin or Greek roots, describe something in its standard anatomical position. This position prov ...

flattened shape) 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-189.

References

{{Taxonbar, from=Q5574172 Fish described in 2011 Loricariidae