Overview

Comprehensive Description

Biology

Inhabits clear water system with the bottom formed by small stones and rocks. Feeds on insects and other aquatic invertebrates (Ref. 84053).
  • de Santana, C. D. and R.P. Vari 2010 Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies. Zool. J. Linn. Soc. 159:223-371. (Ref. 84053)
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Distribution

South America: Brazil, Amazon Basin, Rio Tocantins (upper and lower portions of that river system).
  • de Santana, C. D. and R.P. Vari 2010 Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies. Zool. J. Linn. Soc. 159:223-371. (Ref. 84053)
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Physical Description

Size

Max. size

60.0 cm TL (male/unsexed; (Ref. 84053))
  • de Santana, C. D. and R.P. Vari 2010 Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies. Zool. J. Linn. Soc. 159:223-371. (Ref. 84053)
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Diagnostic Description

This species is distinguished from its congeners by the following set of characters: a short gape that terminates posteriorly at, or slightly short of, the vertical through the anterior nares; no scales along the mid-dorsal region of the body as far posteriorly as the origin of the electroreceptive filament; anal-fin rays 200-217 (Ref. 84053).
  • de Santana, C. D. and R.P. Vari 2010 Electric fishes of the genus Sternarchorhynchus (Teleostei, Ostariophysi, Gymnotiformes); phylogenetic and revisionary studies. Zool. J. Linn. Soc. 159:223-371. (Ref. 84053)
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Type Information

Paratype for Sternarchorhynchus axelrodi de Santana & Vari
Catalog Number: USNM 391570
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): D. Moraes, C. Ricci & Roppa
Year Collected: 1988
Locality: Brazil, Goias, municipio de Minacu/Cavalcante, Rio Tocatins, at future site of Usina Hidroelectrica Serra da Mesa, Goias, Brazil, South America
  • Paratype: de Santana, C. D. & Vari, R. P. 2010. Zoological Journal of the Linnean Society. 159: 275, Figs. 26-28.
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© Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes

Source: National Museum of Natural History Collections

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Ecology

Habitat

Environment

benthopelagic; freshwater
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Conservation

Threats

Not Evaluated
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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