I see your huge pond in a pic. I hope no alligators. The recent attacks on the news is frightening. More than usual because new homes are impinging on there habitat.
Mosquito fish are illegal in most areas in Or. and Wa. The Oregon fish and wildlife service has stipulated the only areas in Oregon where they can be used. Most of the mosquito eggs are eaten by any of the fish in the water ways. But it's a record year for mosquitos because the frog eggs were frozen due to a late winter storm across the PNW.
There are several amphibians that hang out by the ponds.I always keep carp in the horses water helps keep the moss/algae and mosquitos in check.
