Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Teleostei (teleosts) >
Characiformes (Characins) >
Characidae (Characins; tetras) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mythology (Ref. 45335); guaricana: Named for its type locality, the Guaricana Reservoir of Paraná State, Brazil. 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
South America: tributaries of the rio Cubatão, coastal basin of Paraná State, Brazil.
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 9.6 cm SL male/unsexed; (Ref. 93808)
Short description
Identification keys | Morphology | Morphometrics
Dorsal soft rays (total): 9 - 10; Vertebrae: 39 - 40. This species belongs to the Astyanax scabripinnis species complex sensu. It is distinguished from congeners of the A. scabripinnis species complex, except A. intermedius, A. laticeps, A. paranae and A. varzeae by having 40-43 teral line scales, (vs. less than 39 scales in A. brachypterygium, A. burgerai, A. courensis, A. cremnobates, A. epiagos, A. goyanensis, A. ita, A. jacobinae, A. jenynsii, A. jordanensis, A. leonidas, A. microschemos, A. obscurus, A. ojiara, A. paris, A. pirapuan, A. rivularis, A. scabripinnis, A. totae, and A. troya). Only A. obscurus and A. ojiara have a maximum of 39 lateral line scales. A. guaricana can be separated from A. ojiara, by having 15-17 circumpeduncular scales (vs. 13-14 scales) and A. obscurus, by having 9-15 scales covering base of anal fin (vs. 6-9 scales). It differs from A. intermedius, A. laticeps and A. paranae by the presence of two vertical humeral spots (vs. a single humeral spot in A. paranae and A. intermedius, which is horizontally oval with narrow and vertical anterior extension in A. laticeps); from A. varzeae by the presence of hooks on the anal fin in males (vs. hooks absent), by a shorter prepectoral distance 23.7-26.5% SL (vs. 26.5-32.0% SL), shorter head length 23.9-26.6% SL (vs. 27.1-29.7% SL), and longer snout length 23.3-27.9% head length (vs. 16.4-23.3% head length); and from A. ribeirae by having two humeral spot (vs. one) and 40-43 lateral line scales (vs. 34-38 lateral line scales) (Ref. 93808).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oliveira, C.A.M., V. Abilhoa and C.S. Pavanelli, 2013. Astyanax guaricana a (Ostariophysi: Characidae), a new species from the rio Cubatão drainage, Paraná State, Southern Brazil. Neotrop. Ichthyol. 11(2):291-296. (Ref. 93808)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 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).
