In 1905, Hawaii introduced mosquitofish to control mosquitoes; the tiny fish later became linked to declines of native damselflies and other threatened species

In 1905, Hawaii introduced mosquitofish to control mosquitoes; the tiny fish later became linked to declines of native damselflies and other threatened species

The introduction of mosquitofish in Hawaii has dramatically affected the ecosystem, leading to notable declines in native aquatic insects. These invasive fish fiercely prey on local species, disrupting food chains. The native damselflies, unprepared for such predation, are particularly vulnerable, seeing their populations plummet. Additionally, mosquitofish compete with endemic fish and crustaceans for limited food resources, complicating contro…