Overview

Distribution

Brazil.
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South America: Rio Tocantins, Rio das Mortes (tributary of Rio Araguaia) and Rio Xingu in Brazil.
  • Menezes, N.A. 2006 Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae). Neotrop. Ichthyol. 4(4):385-400. (Ref. 75890)
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Physical Description

Morphology

Dorsal soft rays (total): 11; Analsoft rays: 33 - 35; Vertebrae: 38 - 39
  • Menezes, N.A. 2006 Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae). Neotrop. Ichthyol. 4(4):385-400. (Ref. 75890)
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Size

Max. size

9.8 cm SL (male/unsexed; (Ref. 75890))
  • Menezes, N.A. 2006 Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae). Neotrop. Ichthyol. 4(4):385-400. (Ref. 75890)
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Diagnostic Description

Distinguished from all species of Acestrocephalusexcept Acestrocephalus boehlkei and Acestrocephalus maculosus by having a dark humeral blotch. Differs from Acestrocephalus boehlkei in having fewer anal-fin rays 29-31 (vs. 34-36) and fewerscale rows around caudal peduncle 22-23 (vs. 25); and from Acestrocephalus maculosus in having more anal-fin rays 29-31 (vs. 25-27). The muscular hiatus of the pseudotympanum in Acestrocephalus stigmatus is narrower than that of Acestrocephalus boehlkei, but much more developed than that of Acestrocephalusmaculosus (Ref. 75890).Description: Dorsal fin ii,9; Anal fin iv,29-31; Pectoral fin i+13-14; Pelvic fin i+7 (Ref. 75890).
  • Menezes, N.A. 2006 Description of five new species of Acestrocephalus Eigenmann and redescription of A. sardina and A. boehlkei (Characiformes: Characidae). Neotrop. Ichthyol. 4(4):385-400. (Ref. 75890)
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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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