Mosquito Fish

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Related to Mosquito Fish: Western Mosquitofish

Mosquito Fish


(Gambusia affinis holbrooki), a fish of the family Poecilidae, order of cyprodonts. In the male the front spines of the anal fin have become a copulatory organ, the gonopodium. Length of the male, up to 4 cm; weight, up to 0.4 gm. Length of the female, up to 7 cm; weight, up to 3.5 gm.

The mosquito fish is viviparous; there may be up to six broods annually at one month intervals. The number of young per brood ranges from 15 to over 100; their body length is 7-8 mm. Sexual maturity is reached at one month. The mosquito fish lives in small bodies of stagnant water and feeds on the larvae and nymphs of mosquitoes, small water animals, roe, and even its own offspring. Its natural habitat is North America.

The mosquito fish was introduced into the USSR in 1925 by the physician N. P. Rukhadze. After successful acclimatization, it was used extensively and with great success in the battle against malaria in the 1930’s and 1940’s in the Central Asian Republics, the southern RSFSR, and the Ukraine. The mosquito fish can cause damage in fishing grounds.


Sokolov, N. P. Gambuzii i ikh rol’ v bor’be s maliariei. Tashkent 1939.
Ivanov, I. K. Ryby-gambuzii i ikh rol’ v bor’be s maliariei vKazakhstan. Alma-Ata, 1950.


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With an appearance similar to anchovy, but smaller, the mosquito fish got its Tagalog name, kataba, because of its bulging belly.
Changes in Behavior and Brain Acetylcholinesterase Activity in Mosquito Fish, Gambusia affinis in Response to The Sub-Lethal Exposure to Chlorpyrfois.
Two groups of journalist-fish, told nothing about results from mosquito fish studies, were persuaded to try an exercise in mixing up types.
An assessment of the introduced mosquito fish (Gambusia affinis holbrooki) as a predator of eggs, hatchlings and tadpoles of native and non-native anurans.
It's a time when juvenile tarpon zero in on the Gambusia minnows, or mosquito fish, a small black minnow that shows up in creeks and canals by the millions.
Ashley Ward and James Herbert-Read from the University of Sydney presented mosquito fish with a choice to swim down one of two arms in a Y-shaped channel.
The predatory efficacy of native crimson-spotted rainbow fish Melanotaenia duboulayi (Melanotaeniidae), Australian smelt Retropinna semoni (Retropinnadae), Pacific blue-eye Pseudomugil signifer (Atherinidae), firetail gudgeon Hyposeleotris galii (Eleotridae), empire gudgeon Hypseleotris compressa (Eleotridae), and estuary perchlet Ambassis marianus (Ambassidae) was compared with that of the exotic eastern mosquito fish Gambusia holbrooki (Poeciliidae).
p Around 90% of the world's malaria cases occur in Africa p Some countries have established programmes to introduce mosquito fish to infested waters which reduce the insect population that spreads malaria p The introduction of nets placed over beds, sprayed with strong insecticide,has helped to reduce childhood deaths p The worst type of parasite is the Plasmodium falciparum which kills around 1% to 2% of those infected p Other strains of the disease cause debilitating chills,fever and weakness lasting 10 to 14days
Add mosquito fish (often free at nurseries) to keep mosquitoes at bay.
Researchers may already be seeing genetic drift in mosquito fish on different sides of levees, says Van Lent.
Mosquito control in wastewater: a controlled and quantitative comparison of Pupfish (Cyprinodon nevadensis amargosae), mosquito fish (Gambusia affinis) and guppies (Poecilia reticulata) in Sago pondweed marshes.