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Klaus Dreymann (2)

Description: 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. iheringii, P. quadriradiatus, and P. rugosus. 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. Etymology: 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. The specific name quadriradiatus: quadri-, four; radiatus, rayed, referring to four-rayed pectoral fin rather than the usual five.

None

Dysichthys quadriradiatus, Bunocephalus quadriradiatus

Aspredinidae

South America: Upper Amazon River basin of Peru. Type locality: Peru: Samiria, Chinguito [= Cocha Shinguita or Shirguita].

3.5cm. (1½ins)

20-25°c (67-77°f.)

6.0-7.2.

Ferraris, C.J. Jr., 2007. Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types. Zootaxa 1418:1-628.
Friel, J.P. 2008 Pseudobunocephalus, a new genus of banjo catfish with the description of a new species from the Orinoco River system of Colombia and Venezuela (Siluriformes: Aspredinidae). Neotropical Ichthyology 6(3):293-300.