Overview

Comprehensive Description

Biology

Inhabits shallow, clear water stream located in the Cerrado region; sandy bottom with small rocks and sparse aquatic vegetation (Ref. 72430).
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Distribution

South America: Upper Xingu River basin.
  • Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira et al. … 2003 Genera Incertae Sedis in Characidae. p. 106-168. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 38376)   http://www.fishbase.org/references/FBRefSummary.php?id=38376&speccode=10622 External link.
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Upper Xingú River basin, Brazil.
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Physical Description

Morphology

Dorsal soft rays (total): 19 - 20; Analsoft rays: 22 - 23; Vertebrae: 34 - 35
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Size

Maximum size: 24.5 mm SL
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Max. size

3.2 cm SL (male/unsexed; (Ref. 38376))
  • Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira et al. … 2003 Genera Incertae Sedis in Characidae. p. 106-168. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 38376)   http://www.fishbase.org/references/FBRefSummary.php?id=38376&speccode=10622 External link.
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Diagnostic Description

This species is differentiated from its congeners in having the following characters: elongated dorsal fins in males; caudal spot diamond-shaped; humeral spot vertically elongated; maxillary teeth hexacuspidate; anal fin rays 22-23; lateral line scales 30-31 (Ref. 72430).Description: Dorsal fin rays ii,8,I; anal fin rays 22-23 (iii-iv, 19-20); pectoral fin rays I,9; pelvic fin rays I,6-7. Color in life dark gray caudal spot, faintly reaching tip of median caudal fin, anteriorly as a pale stripe continuous with the faint humeral spot; body sides and head golden, mandibular region orange, nostrils red, iris red above, bright metallic blue below; dorsal fin pale crimson with a dark gray line on anterior edge; adipose, pectoral, pelvic, and anal fins orange, a dark gray line on distal margin of anal and another similar line on anterior margin of pelvic; caudal fin yellow, with a bright yellow spot on the base of each lobe (Ref. 72430).
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Ecology

Habitat

Environment

benthopelagic; freshwater; depth range 1 - 2 m (Ref. 72430)
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Conservation

Threats

Not Evaluated
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