Definitions for gambusiagæmˈbyu ʒə, -ʒi ə
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Gambusia, genus Gambusia(noun)
Any of several freshwater fish, of the genus Gambusia, that feed on the larva of mosquitos, and are used to control them
Gambusia is a large genus of fish in family Poeciliidae. Gambusia contains over 40 species, most of which are principally found in freshwater habitats, though some species may also be found in brackish or saltwater habitats. The type species is the Cuban gambusia, G. punctata. The greatest species richness is in Mexico, Texas and the Greater Antilles, but there are also species elsewhere in eastern and southern United State, The Bahamas, Central America and Colombia. Gambusia species are often called topminnows or simply gambusias; they are also known as mosquitofish, which, however, refers more specifically to two species, G. affinis and G. holbrooki. These can be introduced into ponds to eat mosquito larvae. As a consequence they have been introduced widely outside their native range, and sometimes become invasive, threatening the local species. They are very important in aquarium trade, desired for small size, ease of breeding, and charming gracefulness. They are viviparous—they have live young. Nine species are listed as Vulnerable in the IUCN Red List; one, the widemouth gambusia, G. eurystoma, is Critically Endangered; and two, the Amistad gambusia, G. amistadensis, and the San Marcos gambusia, G. georgei, are already extinct.
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