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Teleostei (teleosts) > 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).
Eponymy: Charles Tate Regan (1878–1943) was a British ichthyologist. [...] (Ref. 128868), visit book page.
More on author: Hubbs.

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

Freshwater; benthopelagic; pH range: 6.5 - 7.8; dH range: ? - 25. Tropical; 22°C - 28°C (Ref. 26130)

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

Central America: Tamaulipas, Mexico.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 3.5 cm TL male/unsexed; (Ref. 26130); 4.5 cm (female)

Inhabits small streams, small rivers and especially adjacent shallow marshes and pools.

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

After about 24 days gestation, female gives birth to 10-20 young. Sexual maturity is reached after three months (Ref. 2060).

Main reference Upload your references | References | Coordinator | Collaborators

Lucinda, P.H.F., 2003. Poeciliidae (Livebearers). p. 555-581. 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, Brazil. (Ref. 50894)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Data deficient (DD) ; Date assessed: 28 March 2018

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Diet composition
Food consumption
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Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
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Abundance

Life cycle
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Maturity
Maturity/Gills rel.
Fecundity
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Eggs
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Distribution
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Anatomy
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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=0.01072 (0.00342 - 0.03356), b=3.08 (2.82 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.2 ±0.4 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Gambusia regani Hubbs, 1926