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Revista de Biología Tropical
On-line version ISSN 0034-7744Print version ISSN 0034-7744
Abstract
LASSO, Carlos A and TAPHORN, Donald. A new species of Acestrocephalus (Characiformes: Characidae) from Venezuela. Rev. biol. trop [online]. 2000, vol.48, n.2-3, pp.443-447. ISSN 0034-7744.
A new species of Acestrocephalus is described from 60 specimens collected in the Río Orinoco and Río Negro drainages, Venezuela. This species is distinguished from all other Acestrocephalus by the combination of the following characters: anal rays, 29-36; 63-71 perforated scales on the lateral line; 10-12 scales above and 9-12 below the lateral line; 39-52 teeth on the maxillary; 9-12 premaxillary teeth; 8-12 teeth in the inner row on the dentary; 5-7 gill rakers on the lower part of the first gill arch; humeral, peduncular and caudal blotch absent.
Keywords : Characiformes; Characidae; Acestrocephalus; new species.