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Astyanax dissensus
No image available for this species;
drawing shows typical fish in this Family.
Google image
No image available for this species;
drawing shows typical fish in this Family.
Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Characiformes (Characins) > Characidae (Characins) > Stethaprioninae
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mithology (Ref. 45335); dissensus: Name from Latin dissensus, meaning disagreement, in reference to the larger maxillary heptacuspid tooth peculiar to the species and unusual in Astyanax species.
Etymology: Astyanax: The name of Astyanax, Hector´s son in the Greek mithology (Ref. 45335); dissensus: Name from Latin dissensus, meaning disagreement, in reference to the larger maxillary heptacuspid tooth peculiar to the species and unusual in Astyanax species.
Environment: milieu / climate zone / depth range / distribution range Ecology
Freshwater; benthopelagic. Subtropical
Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
South America: Laguna dos Patos system and rio Uruguay drainage; one specimen from coastal lagoon of rio Tramandaí system.
Size / Weight / Age
Short description Morphology | Morphometrics
Dorsal
soft rays
(total): 10-11;
Anal
soft rays: 27 - 33;
Vertebrae: 35 - 36. This species can be diagnosed from all congeners in the rio Uruguay basin, laguna dos Patos and rio Tramandaí systems, except Astyanax ojiara, by the presence of one heptacuspid tooth on maxillary (vs. tri- to pentacuspid teeth). It differs from other congeners, including species complex A. bimaculatus and A. scabripinnis by the following combination of characters: two humeral spots, the first spot vertically elongate; conspicuous caudal spot; 35-39 perforated lateral line scales; 6-7 scale rows between dorsal-fin origin and lateral line; 22-28 branched anal-fin rays; predorsal region scaled; one heptacuspid maxillary tooth; body depth 37.2-44.2% of SL; and head length 22.7-27.3% of SL). It is distinguished from A. ojiara by the head length 22.7- 27.3% (vs. 27.3-29.5% of SL) and by the presence of hooks on anal fin on males (vs. all fins with hooks) (Ref. 94153).
Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Main reference
Upload your references | References | Coordinator | Collaborators
De Lucena, C.A.S., J.B. Castro and V.A. Bertaco, 2013. Three new species of Astyanax from drainages of southern Brazil (Characiformes: Characidae). Neotrop. Ichthyol. 11(3):537-552. (Ref. 94153)
Threat to humans
Harmless
Human uses
FAO(Publication : search) | FishSource |
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FAO areas
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Diet
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Common names
Synonyms
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Fecundity
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Synonyms
Metabolism
Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Spawning aggregation
Fecundity
Eggs
Egg development
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Length-weight
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BRUVS
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Aquaculture
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Allele frequencies
Heritability
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Processing
Mass conversion
Aquaculture
Aquaculture profile
Strains
Genetics
Allele frequencies
Heritability
Diseases
Processing
Mass conversion
Tools
E-book | Field guide | Length-frequency wizard | Life-history tool | Point map | Classification Tree
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Special reports
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Internet sources
Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishipedia | Fishtrace | GenBank(genome, nucleotide) | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record
Estimates based on models
Phylogenetic diversity index (Ref. 82805): PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01288 (0.00595 - 0.02787), b=3.06 (2.89 - 3.23), 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): .
Vulnerability (Ref. 59153): Low vulnerability (10 of 100) .