Classification / Names
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Actinopterygii (ray-finned fishes) >
Characiformes (Characins) >
Characidae (Characins) > Incertae sedis
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mithology (Ref. 45335); henseli: Named for R. Hensel, for his contributions to ichthyology in southern Brazil.
Environment / Climate / Range
Ecology
Freshwater; pelagic. Tropical
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 10.8 cm SL male/unsexed; (Ref. 56653)
Short description
Morphology | Morphometrics
Dorsal
soft rays
(total): 10-11;
Anal
soft rays: 25 - 33. Diagnosis: Distinguished from its congeners except A. saguazu and A. elachylepis by the presence of a second vertically elongate humeral spot (vs. one humeral spot). It differs from saguazu, elachylepis, and fasciatus species complex by the autapomorphic presence of a space between the dentary teeth, which are relatively slender, with cusps positioned close to one another, and by the presence of a maximum of five cusps in each dentary tooth (vs. maximum of 7 cusps). Differs from fasciatus, rutilus, and elachylepis by the presence of 2 - 5, usually 5, tricuspid teeth on the anterior margin of maxilla (vs. 1 - 2 teeth, usually 1, on anterior margin of maxilla) (Ref. 56653).
Distribution
Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri
South America: Southern Brazil.
de Melo, F.A.G. and P.A. Buckup, 2006. Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes). Neotrop. Ichthyol. 41(1):45-52.
IUCN Red List Status (Ref. 90363)
Threat to humans
Harmless
Human uses
More information
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Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref.
82805): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00888 (-0.21703 - 0.23479), b=3.24 (3.12 - 3.36), based on LWR estimates for this family-BS (Ref.
93245).
Trophic Level (Ref.
69278): 2.8 ±0.3 se; Based on size and trophs of closest relatives
Resilience (Ref.
69278): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref.
59153): Low vulnerability (10 of 100) .