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Gymnogeophagus balzanii (Perugia, 1891)

Argentine humphead
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Image of Gymnogeophagus balzanii (Argentine humphead)
Gymnogeophagus balzanii
Male picture by Casacuberta, M.


Argentina country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Found in the upper and tributaries of Paraná (Ref. 56308). Also Ref. 36377.
National Checklist: Argentina
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ar.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: López, H.L., A.M. Miquelarena and J. Ponte Gómez, 2005
National Database:

Common names from other countries

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

> Cichliformes (Cichlids, convict blennies) > Cichlidae (Cichlids) > Geophaginae
Etymology: Gymnogeophagus: Greek, gymnos = naked + Greek, gea = the earth + Greek, phaegein, to eat (Ref. 45335).

Issue
Redescription in Reis & Malabarba (1988).

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

; Água doce bentopelágico; pH range: 6.0 - 8.0; dH range: 5 - 19.   Subtropical; 22°C - 26°C (Ref. 1672)

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

South America: Paraná River basin, in the Paraguay drainage in Brazil and Paraguay, the Paraná drainage in Argentina; the lower Uruguay drainage in Uruguay and Brazil.

Tamanho / Peso / Idade

Maturity: Lm ?  range ? - ? cm
Max length : 12.0 cm SL macho/indeterminado; (Ref. 36377)

Biologia     Glossário (p.ex. epibenthic)

Max. length 20 cm TL (Ref. 1672).

Ciclo de vida ou comportamento de acasalamento Maturities | Reprodução | Spawnings | Egg(s) | Fecundities | Larvas

Larvophile mouth brooders. Female tends the clutch. This updates previous information from Ref. 1672.

Referência principal Upload your references | Referências | Coordenador : Kullander, Sven O. | Colaboradores

Kullander, S.O., 2003. Cichlidae (Cichlids). p. 605-654. 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. 36377)

Status na Lista Vermelha da UICN (Ref. 130435)

  Segura ou pouco preocupante (LC) ; Date assessed: 18 November 2020

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Ameaça para os humanos

  Harmless




Uso pelos humanos

Pescarias: espécies comerciais; Aquário: Espécies comerciais
FAO(Publication : search) | FishSource |

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Trophic ecology
Itens alimentares
Diet compositions
Food consumptions
Food rations
Predadores
Ecology
Ecologia
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Frequências de comprimento
Mass conversions
Recruitments
Abundances
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Reprodução
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Fecundities
Spawnings
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Tipo de natação
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Visual pigment(s)
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Diseases / Parasites
Toxicities (LC50s)
Genetics
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Electrophoreses
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Perfis para aquacultura
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Stamps, coins, misc.
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References
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Fontes da internet

Estimates based on models

Índice de diversidade filogenética (Ref. 82804):  PD50 = 0.5005   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02188 (0.01030 - 0.04649), b=3.03 (2.84 - 3.22), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Nível Trófico (Ref. 69278):  3.3   ±0.5 se; based on size and trophs of closest relatives
Resiliência (Ref. 120179):  médio(a), tempo mínimo de duplicação da população 1,4 - 4,4 anos (Fec=500).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).
Categoria de preço (Ref. 80766):   Unknown.