Phractocephalus hemioliopterus (Bloch & Schneider, 1801)

Collins, Rupert A., Duarte Ribeiro, Emanuell, Nogueira Machado, Valeria, Hrbek, Tomas & Farias, Izeni Pires, 2015, A preliminary inventory of the catfishes of the lower Rio Nhamunda, Brazil (Ostariophysi, Siluriformes), Biodiversity Data Journal 3, pp. 4162-4162 : 4162

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Phractocephalus hemioliopterus (Bloch & Schneider, 1801)


Phractocephalus hemioliopterus (Bloch & Schneider, 1801)


Type status: Other material. Occurrence: catalogNumber: 14459 ; recordedBy: Valéria Nogueira Machado; Emanuell Duarte Ribeiro; Rupert A. Collins; individualCount: 1; associatedSequences: KP772589; Taxon: scientificName: Phractocephalus hemioliopterus (Bloch & Schneider, 1801); kingdom: Animalia; phylum: Chordata; class: Actinopterygii; order: Siluriformes; family: Pimelodidae; genus: Phractocephalus; specificEpithet: hemioliopterus; scientificNameAuthorship: (Bloch & Schneider, 1801); Location: country: Brazil; stateProvince: Pará; locality: Lower Nhamunda River ; decimalLatitude: -1.67511; decimalLongitude: -57.47678; geodeticDatum: WGS84; Identification: identifiedBy: Rupert A. Collins; Event: eventDate: 2013-11; Record Level: institutionCode: UFAM; collectionCode: CTGA; basisOfRecord: PreservedSpecimen GoogleMaps


Identification to species level follows Lundberg and Aguilera (2003) and Mol (2012) based on the following characters: dermal bones of the skull coarsely sculpted with reticulated ridges surrounding rounded pits; supraoccipital process greatly expanded laterally; anterior nuchal plate enlarged; colour pattern with dark upper and white/yellow lower parts of flank; and caudal fin bright red/orange.

One individual was caught by baited hand-line in a deep pool of the main river. The live specimen is pictured in Fig. 30.