Overview

Distribution

Jequitinhonha River basin, southeastern Brazil.
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South America: Rio Jequitinhonha basin, Minas Gerais, Brazil.
  • Triques, M.L., V. Vono and E.V. Caiafa 2003 Astyanax turmalinensis, a new species from the Rio Jequitinhonha basin, Minas Gerais, Brazil (Characiformes: Characidae: Tetragonopterinae). J. Ichthyol. Aquat. Biol. 7(4):145-150. (Ref. 52302)
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Physical Description

Morphology

Dorsal spines (total): 2; Dorsal soft rays (total): 9; Anal spines: 2 - 3; Analsoft rays: 18 - 21
  • Triques, M.L., V. Vono and E.V. Caiafa 2003 Astyanax turmalinensis, a new species from the Rio Jequitinhonha basin, Minas Gerais, Brazil (Characiformes: Characidae: Tetragonopterinae). J. Ichthyol. Aquat. Biol. 7(4):145-150. (Ref. 52302)
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Size

Max. size

6.5 cm SL (male/unsexed; (Ref. 81203))
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Diagnostic Description

Astyanax turmalinensis differs from the other species of the genus by the following combination of characters: presence of 20 to 24 anal fin rays; 34 to 36 scales in lateral lines; 1 or 2 teeth in the maxillary bone; greatest body depth at pelvic fin origin; caudal peduncle oval spot horizontally elongated, prolonging into median caudal fin rays, onward becoming a dark band laterally on the body, tapering anteriorly, to a point slightly anterior to middle of standard length; humeral black spot present, truncate anteriorly, usually circular posteriorly, extending anteroventrally, followed by a clear area and then subsequentely a vertically elongated dark area of loosely-assembled chromatophores. Snout slender, about the same mength as eye diameter; four teeth in the outer row of the premaxillary bone; posterior border of anal fin concave anteriorly.
  • Triques, M.L., V. Vono and E.V. Caiafa 2003 Astyanax turmalinensis, a new species from the Rio Jequitinhonha basin, Minas Gerais, Brazil (Characiformes: Characidae: Tetragonopterinae). J. Ichthyol. Aquat. Biol. 7(4):145-150. (Ref. 52302)
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Ecology

Habitat

Environment

pelagic; freshwater; depth range 0 - 1 m (Ref. 52302)
  • Triques, M.L., V. Vono and E.V. Caiafa 2003 Astyanax turmalinensis, a new species from the Rio Jequitinhonha basin, Minas Gerais, Brazil (Characiformes: Characidae: Tetragonopterinae). J. Ichthyol. Aquat. Biol. 7(4):145-150. (Ref. 52302)
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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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