[gam-byoo-zhuh, -zhee-uh, -zee-uh] 
| any fish of the genus Gambusia, comprising small livebearers that feed on aquatic insect larvae and are used to control mosquitoes. |
| gam·bu·sia (gām-byōō'zhə) n. Any of various small livebearing fish of the genus Gambusia that feed on mosquito larvae and are often used in mosquito control. [New Latin Gambusia, genus name, from American Spanish gambusino.] |
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