Editorial Type:
Article Category: Research Article
 | 
Online Publication Date: 01 Dec 2002

Astyanax paris: A New Species from the Río Uruguay Basin of Argentina (Characiformes, Characidae)

,
, and
Page Range: 1052 – 1056
DOI: 10.1643/0045-8511(2002)002[1052:APANSF]2.0.CO;2
Save
Download PDF

Abstract

A new species of the characid genus Astyanax is described. The species is currently known only from two localities in headwater streams of arroyo Yabotí-Guazú, a tributary of the upper río Uruguay, in Argentina. Astyanax paris n. sp. can be easily distinguished from all congeneres by the combination of relatively shallow body (34.9–39.4% SL), three or four maxillary teeth, fifth tooth of the inner premaxillary series posterior to main series, first humeral spot followed by a second one vertically elongated, sometimes wider than the first, a caudal spot continued onto the middle caudal fin rays, large dark chromatophores on the cheek, 34–36 perforated scales in the lateral series and, iv–v, 20–22 anal fin rays.

Copyright: The American Society of Ichthyologists and Herpetologists
 Fig. 1. 
 Fig. 1. 

Astyanax paris new species, holotype, MLP 9584, 75.6 mm SL, Argentina, province of Misiones, arroyo Fortaleza, headwaters of arroyo Yabotí-Guazú, tributary of río Uruguay

 Fig. 2. 
 Fig. 2. 

Astyanax paris, right upper jaw in lateral view, scale bar = 1 mm

 Fig. 3. 
 Fig. 3. 

Astyanax paris, right lower jaw in medial view, scale bar = 1 mm

 Fig. 4. 
 Fig. 4. 

Geographical distribution of Astyanax paris. 1: arroyo Fortaleza (type locality), 2: arroyo Yabotí-Miní

Received: 15 Nov 2001
Accepted: 23 May 2002
  • Download PDF