Iowa DNR
BioNet
River & Stream Biological Monitoring
Fish and Benthic Macroinvertebrate Surveys
Physical Habitat Assessments

Western Mosquitofish Gambusia affinis

Family
Poecilliidae (Livebearers)
Tolerance
Intermediate
Trophic Class
Insectivore
Is Exotic to Iowa?
False
Is Lithophilous Spawner?
False
Is Hybrid?
False
State Listing Status
Not Listed
Assessment Program Statistics

This species was found at 10 bioassessment sites, 1 rapid fish bioassessment site, 1 fisheries assessment site, and 0 fisheries presence-only assessment sites. In total, it was collected at 11 distinct sites, or 0.7% of the 1559 total sites monitored by the bioassessment program. It is the 100th most commonly collected species.

The Western Mosquitofish was collected in 19 bioassessment sampling sessions and 1 fisheries assessment session. It was present in 1 rapid bioassessment session and 0 presence-only sessions.

The biological assessment program has collected a total of 400 individual Western Mosquitofish specimens, ranking it the #77 most collected fish.

Species Distribution Maps

HUC12 watersheds where this species has been found