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Gymnocorymbus ternetzi  (Boulenger, 1895)

Black tetra
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Image of Gymnocorymbus ternetzi (Black tetra)
Gymnocorymbus ternetzi
Female picture by Hoffmann, P. and M. Hoffmann

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

Actinopterygii (ray-finned fishes) > Characiformes (Characins) > Characidae (Characins) > Stethaprioninae
Etymology: Gymnocorymbus: Greek, gymnos = naked + Greek,korymb = summit, cluster of fruits and flowers (Ref. 45335).

Environment / Climate / Range Ecology

Freshwater; pelagic; pH range: 6.0 - 8.0; dH range: 5 - 19.   Subtropical; 20°C - 26°C (Ref. 1672); 11°S - 30°S, 64°W - 48°W

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

South America: Paraguay and Guaporé River basins to Argentina (Ref. 9086).

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 7.5 cm SL male/unsexed; (Ref. 81048)

Biology     Glossary (e.g. epibenthic)

Occurs in the middle and upper water layers. Feeds on worms, small crustaceans and insects (Ref. 7020). Aquarium keeping: in groups of 5 or more individuals; minimum aquarium size 60 cm (Ref. 51150).

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

Main reference Upload your references | References | Coordinator | Collaborators

Lima, F.C.T., L.R. Malabarba, P.A. Buckup, J.F. Pezzi da Silva, R.P. Vari, A. Harold, R. Benine, O.T. Oyakawa, C.S. Pavanelli, N.A. Menezes, C.A.S. Lucena, M.C.S.L. Malabarba, Z.M.S. Lucena, R.E. Reis, F. Langeani, C. Moreira et al. …, 2003. Genera Incertae Sedis in Characidae. p. 106-168. In R.E. Reis, S.O. Kullander and C.J. Ferraris, Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil. (Ref. 38376)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 115941)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Aquarium: highly commercial
FAO(Publication : search) | FishSource |

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Common names
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Predators
Ecotoxicology
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
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Length-weight
Length-length
Length-frequencies
Morphometrics
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Larvae
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Internet sources

Alien/Invasive Species database | Aquatic Commons | BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | ECOTOX | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5625   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01660 (0.00704 - 0.03912), b=3.04 (2.83 - 3.25), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.32 se; Based on food items.
Resilience (Ref. 69278):  High, minimum population doubling time less than 15 months (tm<1).
Vulnerability (Ref. 59153):  Low vulnerability (10 of 100) .