Pseudobunocephalus is distinguished from
all other aspredinid genera by the following unique
features: mandibular teeth restricted to a patch near
symphysis of lower jaw; no contact between the metapterygoid
and quadrate; autopalatine posteriorly forked with
two separate cartilages; absence of the fourth pharyngobranchial;
absence of gill rakers on all branchial arches; and
lack of bifid hemal spines on vertebrae that articulate
with anal-fin pterygiophores. As defined Pseudobunocephalus
contain a new species, P. lundbergi from
the Orinoco River basin, along with five other species
previously assigned to the genus Bunocephalus:
P. amazonicus, P. bifidus, P.
and P. rugosus. Entomology:
The generic name is a combination of the Greek word
pseudes, meaning false or deceptive, plus the aspredinid
genus Bunocephalus. It alludes to the fact
that members of this new genus have previously been
mistaken for juveniles of various species of Bunocephalus.
Aquarium Care: Very small species
that can probably be kept as per other members of
this family with a quite tank with sand and plants.
Diet: Tablet foods and small live
foods. Remarks: A new species is
described from streams of the lower Tocantins and
the Mearim river drainages, in North and Northeast
of Brazil, Pseudobunocephalus
timbira Leão, Carvalho, Reis
& Wosiacki, 2019.
South America:Atlantic, Paraguay and Uruguay River basins.
Reported from the upper and tributaries of Paraña
in Argentina. Type Locality: Rio
Grande do Sul, Brazil.
1989. An atlas of freshwater and marine catfishes.
A preliminary survey of the Siluriformes. T.F.H. Publications,
Inc., Neptune City, New Jersey (USA). 784 p. Froese, R. and D. Pauly. Editors.
2020. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 12/2020 ).