Overview

Distribution

Rio Grande do Sul, Brazil.
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South America: Southern Brazil.
  • de Melo, F.A.G. and P.A. Buckup 2006 Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes). Neotrop. Ichthyol. 41(1):45-52. (Ref. 56653)
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Physical Description

Morphology

Dorsal soft rays (total): 10 - 11; Analsoft rays: 25 - 33
  • de Melo, F.A.G. and P.A. Buckup 2006 Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes). Neotrop. Ichthyol. 41(1):45-52. (Ref. 56653)
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Size

Max. size

10.8 cm SL (male/unsexed; (Ref. 56653))
  • de Melo, F.A.G. and P.A. Buckup 2006 Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes). Neotrop. Ichthyol. 41(1):45-52. (Ref. 56653)
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Diagnostic Description

Diagnosis: Distinguished from its congeners except A. saguazu and A. elachylepis by the presence of a second vertically elongate humeral spot (vs. one humeral spot). It differs from saguazu, elachylepis, and fasciatus species complex by the autapomorphic presence of a space between the dentary teeth, which are relatively slender, with cusps positioned close to one another, and by the presence of a maximum of five cusps in each dentary tooth (vs. maximum of 7 cusps). Differs from fasciatus, rutilus, and elachylepis by the presence of 2 - 5, usually 5, tricuspid teeth on the anterior margin of maxilla (vs. 1 - 2 teeth, usually 1, on anterior margin of maxilla) (Ref. 56653).
  • de Melo, F.A.G. and P.A. Buckup 2006 Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes). Neotrop. Ichthyol. 41(1):45-52. (Ref. 56653)
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Ecology

Habitat

Environment

pelagic; 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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