Outdoor Pond care "?"

[marisa]

Hi! I am not sure if anyone on the forum can answer this but anyways...

I have a large plastic pond I put my RES turtle in outside during the summer months. It has no filter, but the water is kept clean because I buy masses of plants and a few fish. And I do regular water changes. (The "pond" is a huge heavy duty kid pool. About 1 foot deep, 5 long and 3 wide)

How can I prevent all mosquitos from breeding in it? Someone told me if I have enough fish that should take care of it. Normally I keep Rose Minnows and those common guppies in it. Will these do the trick?

Marisa