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Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Characidae (Characins) > Incertae sedis
Etymology: Astyanacinus: Derived from the name of Astyanax, Hector´s son in the Greek mithology (Ref. 45335); yariguies: Refers to the Yariguíes, the indigenous group that inhabited an area that includes the watershed of Río Cascajales. They fiercely defended their pristine territory for more than 400 years, which likely contributed to the preservation of the species described here. The Yariguíes finally succumbed to invasion and extermination in the mid-20th century. A noun in apposition.

Environment / Climate / Range Ecology

Freshwater; benthopelagic. Tropical, preferred ?

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South America: tributaries of the Río Cascajales, in Río La Colorada basin, Río Magdalena system in Colombia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 7.7 cm SL male/unsexed; (Ref. 91755)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 10-11; Anal soft rays: 31 - 33; Vertebrae: 35 - 37. Distinguished from other congeners by having the following characters: predorsal scale series regular with 13 scales; maxilla with six teeth; nine scale rows between dorsal-fin origin and lateral line; and snout length 14.9-25.3 % of head length. Can be separated easily from other characins (except for Astyanacinus orthodus) by its coloration pattern consisting of two humeral spots, midlateral stripe formed by anteriorly oriented chevron bars, and horizontally oriented oval-shaped caudal spot that continues over median caudal rays and never reaches a vertical through the last anal-fin ray base. Differs also from species of Astyanax by the combination of 6 teeth in maxilla, 13 scales in a regular predorsal series, 36-39 lateral line scales, 9 scale rows above and 7 scale rows below the lateral line, ii-iii 28-30 anal fin rays, and a maximum body depth 35.4-43.2% of SL (Ref. 91755). Description:

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Main reference Upload your references | References | Coordinator | Collaborators

Torres-Mejia, M., E. Hernández and V. Senechal, 2012. A new species of Astyanacinus (Characiformes: Characidae) from the Río Magdalena System, Colombia. Copeia 2012(3):501-506. (Ref. 91755)

IUCN Red List Status (Ref. 115185)

Data deficient (DD)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

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Astyanacinus yariguies Torres-Mejia, Hernández & Senechal, 2012