Sahn -- similar to your thought, a common thought up here in the north part of the country is that our native fathead minnows eat a lot more mosquito larvae than the non-native mosquitofish. This seems likely to me, as the biomass (weight of fish per acre) of fatheads that can develop in a wetland is amazing.

Dave

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From Bob Lusk: Dr. Dave Willis passed away January 13, 2014. He continues to be a key part of our Pond Boss family...and always will be.