Overview

Distribution

Argentinis and Uruguay.
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South America: Argentina, Uruguay and Brazil. Argentina, Río de la Plata basin, Buenos Aires, Punta Indio, Arroyo Casilda. Uruguay: Atlantic slope and Laguna Merín. Brazil: Vacacaí, Rio Grande do Sul (Ref. 84088).
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Physical Description

Size

Max. size

6.3 cm SL (male/unsexed; (Ref. 84088)); 7.14 cm SL (female)
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Diagnostic Description

Astyanax stenohalinus is distinguished from all other Astyanax species by the possession of hooks on all fins of males, teeth not expanded distally, two or three maxillary teeth, 37–39 perforated scales in lateral series, 25–30 branched anal fin rays, and anal-fin origin located before a vertical through last dorsal-fin ray insertions (Ref. 84088)
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Ecology

Habitat

Environment

benthopelagic; freshwater
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Conservation

Threats

Not Evaluated
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