Animalia > Chordata > Actinopterygii > Siluriformes > Pimelodidae > Phractocephalus > Phractocephalus hemioliopterus

Phractocephalus hemioliopterus (Redtail catfish)

Synonyms: Phractocephalus bicolor; Pimelodus grunniens; Rhamdia grunniens; Silurus hemioliopterus
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Wikipedia Abstract

The redtail catfish, Phractocephalus hemioliopterus, is a pimelodid (long-whiskered) catfish. In Venezuela it is known as cajaro and in Brazil it is known as pirarara. It is the only extant species of the genus Phractocephalus. This fish is a common aquarium fish.
View Wikipedia Record: Phractocephalus hemioliopterus


Migration [1]  Potamodromous

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Mamirauá Sustainable Development Reserve State Sustainable Development Reserve VI 3260792 Amazonas, Brazil  
Manú National Park II 4213523 Cusco, Peru  
Noel Kempff Mercado National Park II 4006523 Bolivia  

Prey / Diet

Mylossoma duriventre (Silver Dollar fish)[2]
Pterygoplichthys multiradiatus (Sailfish catfish)[2]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Pseudoplatystoma reticulatum (Tiger shovelnose catfish)2
Pseudoplatystoma tigrinum (Tiger sorubim)1


Inia geoffrensis (Pink River Dolphin)[3]

Institutions (Zoos, etc.)


Amazon; America, South - Inland waters; Bolivia; Brazil; Colombia; Ecuador; Guyana; Marañón; Neotropical; Orinoco; Peru; South America: Amazon and Orinoco River basins.; Venezuela;

External References



Attributes / relations provided by
1Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
2Dietary segregation among large catfishes of the Apure and Arauca Rivers, Venezuela, A. BARBARINO DUQUE AND K. O. WINEMILLER, Journal of Fish Biology (2003) 63, 410–427
3Inia geoffrensis, Robin C. Best and Vera M. F. da Silva, MAMMALIAN SPECIES No. 426, pp. 1-8 (1993)
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