Bryconamericus turiuba, a New Species from the Upper Rio Paraná System (Ostariophysi: Characiformes)

Bryconamericus turiuba, new species, is described from the upper Rio Paraná system in Brazil. It differs from all congeners in the following combination of characters: 15– 20 branched anal-fin rays; four or five scales in a transverse series from the dorsal-fin origin to the lateral line; shallow bo...

Full description

Saved in:
Bibliographic Details
Published in:Copeia 2005-05, Vol.2005 (2), p.386-392
Main Authors: Langeani, Francisco, de Lucena, Zilda Margarete S, Pedrini, Juliane Lima, Tarelho-Pereira, Fabrício José
Format: Article
Language:English
Subjects:
Alto
Biodiversity
Fish
Fish scales
Head
Herpetology
Holotypes
Male animals
Marine ecology
New species
Peduncle
Rivers
Stripes
Teeth
Zoology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Bryconamericus turiuba, new species, is described from the upper Rio Paraná system in Brazil. It differs from all congeners in the following combination of characters: 15– 20 branched anal-fin rays; four or five scales in a transverse series from the dorsal-fin origin to the lateral line; shallow body (depth 23.6–30.6% of SL); 37–43 perforated lateral line scales; first, third, and fifth or, more rarely, first and fourth outer premaxillary tricuspid teeth projecting anteriorly; two to five tricuspid to pentacuspid maxillary teeth; dentary with three or four tricuspid or pentacuspid large teeth, followed by five to seven smaller conical to tricuspid teeth; a conspicuous dark, vertically elongate humeral spot, extending to below the lateral line; a dark dorsal stripe extending from the supraoccipital spine to the caudal peduncle with a gap at the adipose-fin base; caudal-fin lobes without conspicuous markings, uniformly pigmented along rays; mature males lacking hooks on the pelvic- and anal-fin rays. The new species is compared with the Bryconamericus species described from the basins of the Rio Paraná, Rio Paraguay, Rio São Francisco, and coastal Brazilian rivers.
ISSN:0045-8511
2766-1512
1938-5110
2766-1520
DOI:10.1643/CI-04-067R1