Taxonomy
The species of ''Pseudobunocephalus'' were originally classified in the genus ''Bunocephalus'', but after further study it was found that these fish were unrelated to the type species ''Bunocephalus verrucosus'' or any of the other existing aspredinid genera. Thus, a new genus was described in 2008. ''Pseudobunocephalus'' is the most basal genus in the family, and represents the cladistics, sister group to all other Aspredinidae. ''P. lundbergi'' is also the most basal species and is the sister taxon to the rest of the species in the genus.Species
There are currently six species in this genus: *''Pseudobunocephalus amazonicus'' (Gerlof Fokko Mees, Mees, 1989) *''Pseudobunocephalus bifidus'' (Carl H. Eigenmann, C. H. Eigenmann, 1942) *''Pseudobunocephalus iheringii'' (George Albert Boulenger, Boulenger, 1891) *''Pseudobunocephalus lundbergi'' John Patrick Friel, Friel, 2008 *''Pseudobunocephalus quadriradiatus'' (Gerlof Fokko Mees, Mees, 1989) *''Pseudobunocephalus rugosus'' (Carl H. Eigenmann, C. H. Eigenmann & Clarence Hamilton Kennedy, C. H. Kennedy, 1903)Distribution
''Pseudobunocephalus'' species are widespread in the Amazon River, Amazon, Orinoco, and Paraguay River, Paraguay-Paraná River basins.Description
Species of ''Pseudobunocephalus'' are small, all of them reaching less than 80 millimetres (3.1 in) fish measurement, SL. They are often mistaken at first glance with juvenile ''Bunocephalus'' species.References
Aspredinidae Fish of South America Catfish genera {{catfish-stub