Gymnotus carapo, Banded knifefish : aquarium

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Espécie relacionadas
- Espécies em
  Gymnotus
- Espécies em
  Gymnotidae
- - Classificação -
- Gymnotinae
- Gymnotidae
- Gymnotiformes
- Teleostei
- Chordata
- Animalia

Gymnotus carapo Linnaeus, 1758

Banded knifefish

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Gymnotus carapo
Picture by Landines, M.

Classificação / Names Nomes comuns | Sinónimos | Catalog of Fishes(Género, Espécies) | ITIS | CoL | WoRMS | Cloffa

> Gymnotiformes (Knifefishes) > Gymnotidae (Naked-back knifefishes) > Gymnotinae
Etymology: Gymnotus: Greek, gymnos = naked (Ref. 45335).
More on author: Linnaeus.

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

; Água doce bentopelágico; pH range: 6.0 - 7.5; dH range: ? - 15; potamódromo (Ref. 51243). Subtropical; 22°C - 28°C (Ref. 1672)

Distribuição Países | Áreas FAO | Ecossistemas | Ocorrências | Point map | Introduções | Faunafri

Central and South America: southern Mexico to Paraguay, including Trinidad.

Length at first maturity / Tamanho / Peso / Idade

Maturity: L_m 19.4, range 25 - ? cm
Max length : 76.0 cm TL macho/indeterminado; (Ref. 79585); peso máx. Publicado: 1.2 kg (Ref. 79585)

Facultative air-breathing (Ref. 126274); Aggressive (Ref. 27188). Inhabits turbid slow moving or standing waters (Ref. 11225). Found also in shallow edges of streams (Ref. 75964). Can survive when ditches, canals and small ponds dry out. (Ref. 11225). Feeds mainly at night on worms, insects (e.g. odonate larvae), shrimps, fish (preferably small characids, e.g. Ctenobrycon and Curimata) and plant matter (Ref. 7020; 10011). Oviparous (Ref. 205). Mouth brooding by males is observed in this species (Ref. 55570). Males provide parental care in nests excavated for eggs and larvae (Ref. 55570). Uses its long anal fin for locomotion. Can distinguish between a `friendly neighbor' and a potentially `threatening stranger' based on electric organ discharge (EOD) waveform alone (Ref. 10011). Relationship between EOD pattern and agonistic behavior in this species has been demonstrated (Refs. 10531, 10532, 10533). Shows auditory abilities, responding best to a frequency of 1000 Hz, with an upper limit above 5000 Hz (Ref. 10831). Also responds to vibratory stimuli (water waves: 125-250 Hz) with transient increase in EOD rate (Ref. 10834). 'Prefers' temperatures of 24-25°C (Ref. 10836).

Life cycle and mating behavior Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas

Parental care is provided by the male. The male sits on a depression with its anal fin expanded horizontally guarding a cluster of larvae. More larvae are spread out in leaf litter up to 2 m away (Ref. 55570).

Referência principal Upload your references | Referências | Coordenador : Campos-da-Paz, Ricardo | Colaboradores

Campos-da-Paz, R., 2003. Gymnotidae (Naked-back knifefishes). p. 483-486. 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. 36692)

Categoria na Lista Vermelha da IUCN (Ref. 130435: Version 2024-2)

Preocupação menor (LC) ; Date assessed: 09 July 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para o homem

Harmless

Utilização humana

Pescarias: sem interesse; Aquário: Espécies comerciais

FAO - Publication: search | FishSource |

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Trophic ecology
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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00372 (0.00286 - 0.00483), b=2.93 (2.85 - 3.01), in cm total length, based on LWR estimates for this species (Ref. 93245).

Nível Trófico (Ref. 69278): 3.6 ±0.56 se; based on food items.

Generation time: 3.6 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.

Resiliência (Ref. 120179): Médio, tempo mínimo de duplicação da população 1,4 - 4,4 anos (tm=2).

Fishing Vulnerability (Ref. 59153): Moderate vulnerability (37 of 100).

Nutrients (Ref. 124155): Calcium = 51.3 [21.6, 112.8] mg/100g; Iron = 0.975 [0.510, 1.782] mg/100g; Protein = 18.3 [17.1, 19.6] %; Omega3 = 0.33 [0.13, 0.83] g/100g; Selenium = 25.6 [9.8, 63.4] μg/100g; VitaminA = 21.8 [6.9, 67.1] μg/100g; Zinc = 1 [1, 1] mg/100g (wet weight);

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