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1 December 2002 Astyanax paris: A New Species from the Río Uruguay Basin of Argentina (Characiformes, Characidae)
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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.

The American Society of Ichthyologists and Herpetologists
María de las Mercedes Azpelicueta, Adriana E. Almirón, and Jorge R. Casciotta "Astyanax paris: A New Species from the Río Uruguay Basin of Argentina (Characiformes, Characidae)," Copeia 2002(4), 1052-1056, (1 December 2002). https://doi.org/10.1643/0045-8511(2002)002[1052:APANSF]2.0.CO;2
Received: 15 November 2001; Accepted: 23 May 2002; Published: 1 December 2002
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