Overview

Distribution

Upper Araguaia River basin, Brazil.
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South America: Brazil.
  • Lima, F.C.T. and C.R. Moreira 2003 Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil. Neotrop. Ichthyol. 1(1):21-33. (Ref. 52338)
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Physical Description

Morphology

Vertebrae: 32 - 33
  • Lima, F.C.T. and C.R. Moreira 2003 Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil. Neotrop. Ichthyol. 1(1):21-33. (Ref. 52338)
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Diagnostic Description

Hyphessobrycon weitzmanorum is distinguished from all congeners, except H. tortuguerae Böhlke, H. bifasciatus Ellis, H. savagei Bussing, H. flammeus Myers, H. griemi Hoedeman, H. balbus Myers, H. itaparicensis Lima & Costa, and H. columbianus Zarske & Géry, by possessing two humeral spots. H. weitzmanorum is distinguished from H. bifasciatus, H. savagei, H. flammeus, H. tortuguerae, H. griemi, H. itaparicensis, and H. columbianus by possessing a general dark color pattern, due to a high concentration of dark chromatophores uniformly distributed over the lateral surfaces of the body (vs. a general clear color pattern, with few, scattered chromatophores over the lateral surfaces of the body). Additionally, Hyphessobrycon weitzmanorum differs from H. bifasciatus, H. griemi and H. tortuguerae by possessing two intensely pigmented, vertically-elongate humeral spots (vs. second humeral blotch fainter in H. bifasciatus; first humeral blotch fainter in H. griemi; and both humeral blotches small, not vertically-elongate in H. tortuguerae). Hyphessobrycon weitzmanorum is distinguished from H. flammeus and H. savagei by possessing wide humeral blotches, with somewhat rounded margins (vs. humeral blotches narrow, with straight margins). Hyphessobrycon weitzmanorum is distinguished from H. balbus in possessing 5 -9 perforated lateral line scales (vs. 11 - 22) and in having the second humeral blotch intensely pigmented (vs. very faint). Hyphessobrycon weitzmanorum is distinguished from H. itaparicensis Lima & Costa (2001), by possessing a lower number of branched anal-fin rays (17 - 21, vs. 22 - 25) and lack of a midlateral, horizontal stripe, crimson in life, that extends from the vertical just posterior of the dorsal-fin origin to the caudal peduncle. Hyphessobrycon weitzmanorum is distinguished from H. columbianus Zarske & Géry (2002), by possessing a lower number of branched anal-fin rays (17 - 21, vs. 23 - 24) and orange pigmentation in life on the caudal, anal, dorsal and pelvic fins (vs. red pigmentation on caudal, and anal) (Ref. 52338).
  • Lima, F.C.T. and C.R. Moreira 2003 Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil. Neotrop. Ichthyol. 1(1):21-33. (Ref. 52338)
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Type Information

Paratype for Hyphessobrycon weitzmanorum Lima & Moreira
Catalog Number: USNM 371924
Collection: Smithsonian Institution, National Museum of Natural History, Department of Vertebrate Zoology, Division of Fishes
Collector(s): C. Moreira & F. Lima
Year Collected: 2001
Locality: Brasil, Mato Grosso, Municipio De Alto Araguaia, Corrego Mosquito, km 476.3 of Ferronorte Railroad., Brazil, South America
  • Paratype: Lima, F. C. & Moreira, C. R. 2003. Neotropical Ichthyology. 1 (1): 27, Figs. 9-10.
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Ecology

Habitat

Environment

pelagic; freshwater
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Trophic Strategy

Usually collected in relatively large, clearwater streams with abundant aquatic vegetation. Observed in small groups of 2-5 individuals, that were sometimes associated with Cnesterodon septentrionalis. Always associated with submerged vegetation.
  • Lima, F.C.T. and C.R. Moreira 2003 Three new species of Hyphessobrycon (Characiformes: Characidae) from the upper rio Araguaia basin in Brazil. Neotrop. Ichthyol. 1(1):21-33. (Ref. 52338)
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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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