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Gambusia affinis (Baird & Girard, 1853)

Mosquitofish
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Gambusia affinis
Male picture by Aland, G.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (Straalvinnigen) > Cyprinodontiformes (Rivulines, killifishes and live bearers) > Poeciliidae (Poeciliids) > Poeciliinae
Etymology: Gambusia: Gambusia: From the Cuban term, Gambusino, which means "nothing", usually in the context of a joke or a farce. Fishing for gambusinos = when one catches nothing (Ref. 45335);  affinis: From the Latin word affinusmeaning related (Ref. 79012).  More on authors: Baird & Girard.

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

; zoetwater; brakwater benthopelagisch; pH range: 6.0 - 8.0; dH range: 5 - 19; potamodroom.   Subtropical; 12°C - 29°C (Ref. 52055); 42°N - 26°N

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

North and Central America: Mississippi River basin from central Indiana and Illinois in USA south to Gulf of Mexico and Gulf Slope drainages west to Mexico. One of the species with the widest range of introductions which acquired for itself a near pan-global distribution (Ref. 1739). Several countries report adverse ecological impact after introduction.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - ? cm
Max length : 5.1 cm TL mannelijk/geslacht niet bekend; (Ref. 50932); 7.0 cm TL (female); common length : 3.9 cm TL mannelijk/geslacht niet bekend; (Ref. 12193); Maximaal vermelde leeftijd: 3 jaren (Ref. 796)

Korte beschrijving Morfologie | Morfometrie

Dorsale stekels (totaal): 0; Dorsale zachte stralen (totaal): 7-9; Anale stekels 0; Anale zachte stralen: 9 - 10. Origin of dorsal fin opposite 7th anal ray. Length of anal base much less than half distance from caudal. 8 horizontal scale rows between back and abdomen. Ventrals terminate immediately before anal fin. Pelvic fins reach ventrals.

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Most abundant in lower reaches of streams (Ref. 44091). Adults inhabit standing to slow-flowing water; most common in vegetated ponds and lakes, backwaters and quiet pools of streams. Found frequently in brackish water (Ref. 5258). Pelagic and surface predatory fish (Ref. 94816). Feed on zooplankton, small insects and detritus (Ref. 5258, 10294). Used as live food for carnivorous aquarium fishes. Viviparous (Ref. 5258, 30578). Effective in mosquito control and widely introduced, but found to compete with indigenous fish and to upset the ecological balance (Ref. 6351).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

The species is viviparous (Ref. 5258). Internal fertilization is possible because the anal fin of the male is modified into a copulatory organ. The females carries about 30 alevins and gestation lasts for a period of 24 days (Ref. 6348) to a month (Ref. 30578).

Voornaamste referentie Upload your references | Referenties | Coördinator | Medewerkers

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

Status op de Rode Lijst van het IUCN (Ref. 120744)

  Niet bedreigd (LC) ; Date assessed: 03 February 2012

CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Potential pest





Gebruik door de mens

Visserij: van minder commercieel belang; Aquarium: Commercieel
FAO(Publication : search) | FishSource |

Meer informatie

Leeftijd/Grootte
Groei
Lengte-gewicht parameters
Lengte-lengte parameters
Lengtefrequenties
Morfometrie
Morfologie
Larven
Populatiedynamica van de larven
recrutering
Abundantie
Referenties
Aquacultuur
Aquacultuurprofiel
Kweeklijnen
Genetica
Alleelfrequenties
Erfelijkheid
Ziekten
Verwerking
Mass conversion
Medewerkers
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Geluid
Ciguatera
Snelheid
Zwemstijl
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Otoliths
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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00794 (0.00636 - 0.00991), b=3.11 (3.05 - 3.17), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  3.1   ±0.2 se; Based on diet studies.
Generation time: 1.4 ( na - na) years. Estimated as median LN(3)/K based on 2 growth studies.
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=1.20; tmax=3; Fec=10-60).
Kwetsbaarheid (Ref. 59153):  Moderate vulnerability (38 of 100) .
Prijsklasse (Ref. 80766):   Unknown.