Astyanax saguazu Casciotta, Almirón & Azpelicueta, 2003
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 Family:  Characidae (Characins), subfamily: Incertae sedis
 Max. size:  9.23 cm SL (male/unsexed)
 Environment:  benthopelagic
 Distribution:  South America: Arroyos Once Vueltas and Shangay of the Río Uruguay in Argentina.
 Diagnosis:  Dorsal soft rays (total): 12-12; Anal soft rays: -35; Vertebrae: 31-33. Maxillary teeth two or three; 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; anal fin rays iv-vi, 25-29; and perforated scales in lateral line series 37-39 (Ref. 52391).
 Biology:  Inhabits streams with sandy-rocky bottom, riffles, small falls and pools (Ref. 52391).
 IUCN Red List Status: Not Evaluated  (Ref. 96402)
 Threat to humans:  harmless
 Country info:   
 

 Entered by: Torres, Armi G. - 05.01.05
 Modified by: Torres, Armi G. - 20.12.13

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