Astyanax ajuricaba  Marinho & Lima, 2009

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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

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);  ajuricaba: Named for Ajuricaba, paramount chief of the Manau Indians, formerly inhabited in the middle rio Negro area; led an unsuccessful attempt to resist the assaults of Portuguese slavers; averted a trial as a rebel by plunging in shackles into rio Negro waters.

Environment / Climate / Range Ecology

Freshwater; benthopelagic.   Tropical

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 9.5 cm SL male/unsexed; (Ref. 81201)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 11; Anal soft rays: 27 - 31; Vertebrae: 36 - 37. Distinguished from all species of the genus and from all remaining characids by having a unique color pattern consisting of the combination of presence of a conspicuous, narrow dark midlateral stripe, a single elongated humeral spot, and upper caudal-fin lobe and middle caudal-fin rays dark, with a clear, rounded ocellated spot present dorsally at anterior third of caudal-fin lobe (Ref. 81201).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions | Faunafri

South America: rio Negro, rio Solimões, and rio Tapajós basins, Amazon basin in Brazil.

Biology     Glossary (e.g. epibenthic)

Collected from a black-water, terra-firme forest stream about 4-5 m wide and 0.5-1.0 m deep, with a predominantly sandy bottom. Also found in a large oxbow lake (Ref. 81201).

Main reference Upload your references | References | Coordinator | Collaborators

Marinho, M.M.F. and F.C.T. Lima, 2009. Astyanax ajuricaba: a new species from the Amazon basin in Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 7(2):169-174.

IUCN Red List Status (Ref. 90363)

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki |

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on empirical models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01410 (0.00454 - 0.04377), b=3.05 (2.79 - 3.31), based on LWR estimates for this Subfamily-BS (Ref. 93245).
Trophic Level (Ref. 69278):  0.0   ±0.0 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .