''Platystomatichthys sturio'' is the only

species In biology, a species is the basic unit of Taxonomy (biology), 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 ...

in the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial n ...

''Platystomatichthys'' of the

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, ...

(

order Order, ORDER or Orders may refer to: * Categorization, the process in which ideas and objects are recognized, differentiated, and understood * Heterarchy, a system of organization wherein the elements have the potential to be ranked a number of ...

Siluriformes)

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Pimelodidae The Pimelodidae, commonly known as the long-whiskered catfishes, are a family of catfishes (order Siluriformes). Taxonomy The family Pimelodidae has undergone much revision. Currently, it contains about 30 genera and about 90 recognized and kno ...

. It is sometimes called the sturgeon catfish. This species occurs in the

Amazon Basin The Amazon basin is the part of South America drained by the Amazon River and its tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Boli ...

and reaches a length of about TL. ''Platystomatichthys'' is classified under the "'' Calophysus-

Pimelodus ''Pimelodus'' is a genus of fish in the family Pimelodidae native to Central and South America. Species There are currently 33 recognized species in this genus: * ''Pimelodus absconditus'' Azpelicueta, 1995 * ''Pimelodus albicans'' (Valencienne ...

'' clade". Within this clade, it is considered a part of the "Pimelodus-group" of Pimelodids, which also includes ''Pimelodus'', '' Exallodontus'', ''

Duopalatinus ''Duopalatinus'' is a small genus of long-whiskered catfishes native to South America. Species There are currently two recognized species in this genus: * ''Duopalatinus emarginatus'' ( Valenciennes, 1840) * ''Duopalatinus peruanus'' Eigenma ...

'', ''

Cheirocerus ''Cheirocerus'' is a genus of long-whiskered catfishes native to South America. Species There are currently three recognized species in this genus: * ''Cheirocerus abuelo'' (Leonard Peter Schultz, Schultz, 1944) * ''Cheirocerus eques'' Carl H. E ...

'', ''

Iheringichthys ''Iheringichthys'' is a small genus of long-whiskered catfish native to South America. Species There are currently three recognized species in this genus:Azpelicueta, M.d.l.M. & Britski, H.A. (2012)Iheringichthys syi ''(Siluriformes: Pimelodidae ...

'', ''

Bergiaria ''Bergiaria'' is a small genus of long-whiskered catfishes native to South America. Species There are currently two recognized species in this genus: * '' Bergiaria platana'' (Steindachner Franz Steindachner (11 November 1834 in Vienna – 1 ...

'', '' Bagropsis'', ''

Parapimelodus ''Parapimelodus'' is a small genus of long-whiskered catfishes native to South America. Species There are currently two recognized species in this genus: * '' Parapimelodus nigribarbis'' (Boulenger, 1889) * '' Parapimelodus valenciennis'' ( Lü ...

'', ''

Platysilurus ''Platysilurus'' is a genus of long-whiskered catfishes native to South America. Taxonomy ''Platysilurus'' is classified under the "'' Calophysus- Pimelodus'' clade". Within this clade, it is considered a part of the "Pimelodus-group" of Pimel ...

'', and ''

Propimelodus ''Propimelodus'' is a genus of South American catfish of the family Pimelodidae. Taxonomy The type species of this genus, ''P. eigenmanni'', was first described in 1946 under the genus '' Pimelodus''. In 2002, the genus ''Propimelodus'' was desc ...

''.

References

Pimelodidae Fish of South America Fish of Brazil Fish of Ecuador Fish of Peru Fish of Venezuela Fish of the Amazon basin Taxa named by Pieter Bleeker Monotypic ray-finned fish genera {{catfish-stub