Tetragonopterus argenteus : aquarium

Tetragonopterus argenteus Cuvier, 1816

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Tetragonopterus argenteus
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Actinopteri (ray-finned fishes) > Characiformes (Characins) > Characidae (Characins; tetras) > Tetragonopterinae
Etymology: Tetragonopterus: Name from Greek words: 'Tetra' meaning four; 'gonia' meaning angle; 'pteron' for fin; referring to the evident tetragonal shape of the body (Ref. 124043).  More on author: Cuvier.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; pelagic; pH range: 5.8 - 8.5; dH range: ? - 30.   Tropical; 22°C - 27°C (Ref. 1672)

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

South America: Amazon basin, upper Essequibo, Orinoco, Parnaíba, Jaguaribe, Paraguay and lower Paraná river basins.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 11.2 cm SL male/unsexed; (Ref. 79891)

Short description Morphology | Morphometrics

Dorsal soft rays (total): 9; Anal soft rays: 28 - 40; Vertebrae: 27. This species is distinguished from all its congeners by the following characters: predorsal scales 11-17 (vs. 7-9); differs from T. anostomus, T. denticulatus, T. kuluene, T. juruena by the principal teeth in dentary 4 (vs. 5-6), and larger and more robust teeth (vs. thinner and sharper); differs from T. anostomus, T. araguaiensis by the number of gill-rakers on the upper limb of the first gill arch 12-15 (vs.17-20); differs from T. anostomus by having a terminal mouth (vs. subsuperior mouth); differs from T. ommatus the maxillary teeth 1-4 (vs. 7-8) and by the presence of a conspicuous dark mark on the caudal peduncle (vs. inconspicuous mark limited to the posterior portion of the caudal peduncle); differs from T. carvalhoi by having a rounded dark mark on the caudal peduncle (vs. lozenge-shaped dark mark on the caudal peduncle); differs from T. rarus by the absence of dark longitudinal stripes on the trunk (vs. presence of such stripes); differs from T. rarus, T. georgiae having the scale rows between lateral line and pelvic-fin origin 3.5 (vs. 4.5-5.5); differs from T. denticulatus by having humeral marks separated by one or two vertical rows of scales (vs. humeral marks separated by three vertical scale rows) (Ref. 124043).

Biology     Glossary (e.g. epibenthic)

Consumed locally for recovery or during illness. Carnivorous (Ref. 42843).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Is being bred in Asia and Florida in ponds (Ref. 1672).

Main reference Upload your references | References | Coordinator | Collaborators

Silva, G.S.C., B.F. Melo, C. Oliveira and R.C. Benine, 2016. Revision of the South American genus Tetragonopterus Cuvier, 1816 (Teleostei: Characidae) with description of four new species. Zootaxa 4200 (1):1-46. (Ref. 124043)

IUCN Red List Status (Ref. 123251)


CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless





Human uses

Aquarium: commercial
FAO - Publication: search | FishSource |

More information

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Internet sources

Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | Public aquariums | 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 = 0.5020   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02188 (0.00837 - 0.05721), b=2.99 (2.76 - 3.22), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.2   ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179):  .
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .