In 1905, Hawaii introduced mosquitofish to control mosquitoes; the tiny fish later became linked to declines of native damselflies and other threatened species
Hawaii introduced mosquitofish to control mosquitoes Introduced to Hawaii in 1905 to control disease-carrying mosquitoes, the eastern mosquitofish (Gambusia affinis) has caused major declines in native aquatic insects, including several threatened species of Hawaiian damselflies. Conservation reports from the United States Fish and Wildlife Service (USFWS) show that the small, non-native fish has had a…