New and poorly known characiform fishes (Teleostei: Characiformes: characidae) from French Guyana. A new tetra of the genus Bryconamericus

Axel Zarske (1) , Pierre-Yves Le Bail (2) , Jacques Géry

1 Senckenberg Naturhistorische Sammlungen Dresden, A.B. Meyer-Bau Königsbrücker Landstraβe 159
2 SCRIBE - Station commune de Recherches en Ichtyophysiologie, Biodiversité et Environnement

Bryconamericus guyanensis sp. n. is described from French Guyana. The new species is closely related to B. subtilisform ROMAN-VALENCIA, 2003 and characterized by the following features: (1) body depth relatively low (3.49-4.16), (2) anal-fin with 19-21 branched rays, (3) 17-21 setiform (4) 38-41 scales in a longitudinal row, (5) 4 1/2-5/1/3 transversal scales, (6) 37 to 40 vertebrae (total), (7) two to three tri- to quincuspid maxillary teeth, and (8) premaxilla in the outer row with four to five (mostly five) tri- to quincuspid teeth which are implanted in an irregularly row.

Mots clés: biogeography; south america; french guyana; Knodus; new species; teleostei; Bryconamericus

Mots clés: Bryconamericus guyanensis

Domaines: Biodiversité et Ecologie

Axel Zarske, Pierre-Yves Le Bail, Jacques Géry. New and poorly known characiform fishes (Teleostei: Characiformes: characidae) from French Guyana. A new tetra of the genus Bryconamericus. Vertebrate Zoology, 2010, 60 (1), pp.3-10. ⟨hal-01204999⟩