Peces Criollos - Freshwater Fishes of Argentina Peces Criollos - Freshwater Fishes of Argentina
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Astyanax saguazu sp.nov.

new species:
Astyanax saguazu   Casciotta, Almirón & Azpelicueta, 2003

type locality:
Argentina, Province of Misiones, Río Uruguay basin, headwaters of Arroyo Once Vueltas (27°38’S 55°12’W); Holotype MLP 9603 (63 mm SL)

distribution in Argentina: 
- type locality
- Province of Misiones, Río Uruguay basin, Arroyo Shangay (27°29’S 54°40’W); Paratypes MLP 9604

published in:
Casciotta, J.R., A.E. Almirón & M. Azpelicueta (2003):
A new species of Astyanax from río Uruguay basin, Argentina (Characiformes: Characidae).
Ichthyological Explorations of Freshwaters 14 (4): 329-334

abstract (from publication):
Astyanax saguazu, new species, is distinguished by the following combination of characters: two or threemaxillary teeth, third or fourth tooth of outer premaxillary series inserted posteriorly to the rest, large eye (41-45 % HL), first anal-fin ray inserted anterior to last dorsal-fin ray, high number of anal-fin rays (iv-vi, 25-29), and 37-39 perforated scales in lateral series. The large eye and the presence of 25-29 branched anal-fin rays differentiate the species from other Astyanax living in southern South America.

Moenkhausia bonita - first record from Argentina

Moenkhausia intermedia - not a species from Argentina

Hisonotus pantherinus - comb.nov. from Eurycheilichthys

Pyxiloricaria menezesi - not a species from Argentina

Gymnogeophagus jaryi sp.nov. from Argentina

Corydoras undulatus - first record from Paraguay

Austrolebias cinereus is a sr. synonym of A. vazferreirai

Gymnogeophagus peliochelynion sp.nov. from Uruguay

Diapoma nandi sp.nov. from Argentina

Austrolebias queguay sp.nov. from Uruguay

Cambeva mboycy comb.nov. from Trichomycterus

Cambeva davisi comb.nov. from Trichomycterus

Cambeva stawiarski comb.nov. from Trichomycterus

Cambeva ytororo comb.nov. from Trichomycterus

Geophagus sveni - first record from Argentina

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