Bryconamericus guyanensis Zarske, Le Bail & Géry, 2010
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Family:  Characidae (Characins), subfamily: Stevardiinae
Max. size:  4.32 cm (male/unsexed)
Environment:  pelagic
Distribution:  South America: French Guyana. Collected in all river basins of French Guyana (see also Planquette et al., 1996, page 241) (Ref. 84136).
Diagnosis:  A relatively small species (largest known specimen 56.7 mm SL) of the genus Bryconamericus Eigenmann, 1907 (type-species: B. exodon Eigenmann, 1907). The new species is 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 gill-rakers, (4) 38 – 41 scales in a longitudinal row, (5) 4½ – 5/1/3 transversal scales, (6) 37 – 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 a irregularly row (Ref. 84136).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (120744)
Threat to humans:  harmless
Country info:   
 

Entered by: Busson, Frédéric - 15.05.10
Modified by: Bailly, Nicolas - 12.08.10

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