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MBSS Fish Information
MOSQUITOFISH
Gambusia holbrooki

The Mosquitofish is a member of the Topminnow family (Poeciliidae). As the name implies, this species has been known to control mosquito populations by feeding on pupal and larval stags.

The map below shows presence (green circles) of this species in the 1995-2019 MBSS dataset.
Illustration by Dave Neely

Distribution of Mosquitofish in Maryland (MBSS data):

The MBSS has collected the following fishes in the family Poeciliidae:

Common Name Genus & species
Mosquitofish Gambusia holbrooki