Astyanax longirhinus Garavello & Sampaio, 2010

Family:  Characidae (Characins; tetras), subfamily: Stethaprioninae
Max. size:  18.6 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  South America: Middle and lower Iguaçu Basin in Brazil.
Diagnosis:  Dorsal soft rays (total): 11-11; Anal soft rays: 18-20. This species is distinguished from all its congeners from Rio Iguaçu by the following set of characters: third infraorbital narrow and deep, not in contact with preopercle, leaving an ample naked area between these bones; teeth of premaxillary series straight; symphysal teeth of premaxillary internal series and dentary teeth tricuspid; teeth on premaxillary external series often tricuspid, with lateral cusps minute when pentacuspid; rest of teeth in premaxillary internal series pentacuspid; maxillary bone long, forming an obtuse angle with premaxillary bone when mouth is closed; dentary large and provided with 4 large tricuspidate, followed by 3-5 tricuspid or pentacuspid teeth (Ref. 85756).
Biology: 
IUCN Red List Status: Least Concern (LC); Date assessed: 07 November 2018 Ref. (130435)
Threat to humans: 


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