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Gymnotus jonasi Albert and Crampton, 2001
Life   Vertebrata   Fish   Gymnotidae   Gymnotus


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http://www.fishbase.org/Summary/speciesSummary.php?genusname=Gymnotus&speciesname=jonasi ---> https://www.fishbase.se/Summary/speciesSummary.php?genusname=Gymnotus&speciesname=jonasi
https://www.fishbase.se/Summary/speciesSummary.php?genusname=Gymnotus&speciesname=jonasi ---> https://www.fishbase.se/summary/Gymnotus-jonasi.html

Common name (e.g. trout)

Genus + Species (e.g. Gadus morhua)

Gymnotus jonasi Albert & Crampton , 2001

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

Actinopterygii (ray-finned fishes) > Gymnotiformes (Knifefishes) > Gymnotidae (Naked-back knifefishes)
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335 ) ;   jonasi: Named in honor of Jonas Alves de Oliveira, a Brazilian naturalist working for the Mamirauá Sustainable Development Reserve (Ref. 41292 ) .

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

Freshwater; benthopelagic.   Subtropical

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

South America: Amazon River basin, Brazil.

Size / Weight / Age

Maturity: L m   ?   range ? - ? cm
Max length : 13.5 cm TL male/unsexed; (Ref. 41292 ); max. published weight: 4.00 g (Ref. 41292 )

Short description Morphology | Morphometrics

Electric organs present.

Biology     Glossary (e.g. epibenthic)

Recorded from root mass of floating meadows in the whitewater floodplains of the Tefé region where it is common although patchy in distribution. Adults both breed and forage in the meadows and are never encountered in other floodplain habitats such as flooded forests. Both juveniles and adults feed on small aquatic animals, especially chironomid larvae (Ref. 41292 ).

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

Main reference Upload your references | References | Coordinator : Campos-da-Paz, Ricardo | Collaborators

Albert, J.S. and W.G.R. Crampton , 2001. Five new species of Gymnotus (Teleostei: Gymnotiformes) from an upper Amazon floodplain, with descriptions of electric organ discharges and ecology. Ichthyol. Explor. Freshwat. 12(3):241-266. (Ref. 41292 )

IUCN Red List Status (Ref. 120744 )

  Least Concern (LC)  ; Date assessed: 01 March 2007

CITES (Ref. 118484 )

Not Evaluated

CMS (Ref. 116361 )

Not Evaluated

Threat to humans

  Harmless




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Internet sources

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

Estimates based on models

Phylogenetic diversity index (Ref. 82805 ):  PD 50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high]. Bayesian length-weight: a=0.00589 (0.00180 - 0.01930), b=2.97 (2.71 - 3.23), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245 ). Trophic Level (Ref. 69278 ):  2.5   ±0.50 se; Based on food items. Resilience (Ref. 120179 ):  High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.). Vulnerability (Ref. 59153 ):  Low vulnerability (13 of 100) .

Entered by Casal, Christine Marie V. Fish Forum
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