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Teleostei (teleosts) > Characiformes (Characins) > Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); salvatoris: Named for the late Dr. Salvador Contreras-Balderas, one of the greatest students of Mexican fishes in general, and of Astyanax in particular. An adjective.
Eponymy: Astyanax was the son of Hector in Greek mythology. See Homer’s Iliad for details. The reasoning for its use for a genus of characins is not explained. (Ref. 128868), visit book page.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; benthopelagic. Tropical

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Central America: endemic to springs at Tamazulapan, Oaxaca, Balsas drainage, Pacific versant of Mexico.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 6.1 cm SL male/unsexed; (Ref. 118583)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 9; Anal soft rays: 20 - 22; Vertebrae: 32 - 33. Astyanax salvatoris is distinguished from other congeners in Oaxaca by following characters: anal-fin rays 20-22 (vs. 21-26); total gill rakers, mean 17 (vs. mean 22 or more in A. finitimus); anterior fontanel sharp-tipped (vs. blunt), long (vs. shorter in A. finitimus); in dorsal view, supraoccipital short, wide-based (vs. long, narrow-based in A. aeneus); 4 maxillary teeth, 2 larger followed by 2 smaller (vs. 1-3, all about same size); epibranchial III distal segment straight (vs. curved in A. finitimus); preopercular ventral rim, convex (vs. straight in A. aeneus); and predorsal elements irregularly expanded (Ref. 118583).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

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Schmitter-Soto, J.J., 2017. A revision of Astyanax (Characiformes: Characidae) in Central and North America, with the description of nine new species. J. Nat. Hist. 51(23/24):1-94. (Ref. 118583)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Critically Endangered (CR) (B1ab(iii)+2ab(iii)); Date assessed: 10 September 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01096 (0.00493 - 0.02437), b=3.10 (2.93 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).

Trophic level (Ref. 69278): 2.9 ±0.4 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Astyanax salvatoris Valdez-Moreno, Lozano-Vilano & Schmitter-Soto, 2017