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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); rioverde: Named for its type locality, ditch south of Rioverde in San Luis Potosí, Mexico. A noun in apposition.
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: Río Pánuco drainage in San Luis Potosí, Mexico.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.5 cm SL male/unsexed; (Ref. 118583)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 9; Anal soft rays: 20; Vertebrae: 32 - 33. Astyanax rioverde is distinguished from its congeners in central-northern Mexico by having the following characters: scales around caudal peduncle, modally 16.5 (vs. fewer); body deeper, mean 37% SL (vs. mean 34% SL in A. argentatus); interorbital, mean 9-10% SL (vs. mean 8% SL in A. tehuacanensis); maxillary 10.2% SL or shorter, mean 9.5% (vs. 10.1% SL or longer, mean 11.1% in A. argentatus); base of anal fin, 24% SL or shorter (vs. 23% SL or longer in A. argentatus); anterior fontanel short (vs. longer in A. mexicanus and A. tehuacanensis), convex-sided (vs. straight-sided in A. acatlanensis, A. mexicanus and A. tehuacanensis), sharp-tipped (vs. blunt in A acatlanensis and A. mexicanus); infraorbital II, triangular with an angled base (vs. base convex in A. acatlanensis, A. argentatus and A. mexicanus); first dorsal pterygiophore, rostral edge, angled (vs. curved in A. argentatus and A. mexicanus); and humeral spot oval (vs. triangular-rectangular) (Ref. 118583).

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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)

Least Concern (LC) ; Date assessed: 10 September 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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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 rioverde Lozano-Vilano & Schmitter-Soto, 2017