[drewzero1]

I have them, love them, and have kept them outside before. I've found their mouths are too small to eat fully-grown mosquito larvae, but as long as they get there before the mosquitoes do they will gladly eat the eggs and young larvae... they are top/middle feeders and will viciously nibble anything in the water column while completely ignoring anything on the bottom.

This year I'm hoping to try the variable platyfish, Xiphophorus variatus (though most just call them 'variatus'). They tolerate a similar temperature range to white clouds but they're slightly bigger and more likely to eat things off the bottom. They're livebearers, so they make more, but in fairness white clouds are among the easiest egg-scatterers to breed and will likely also make more in a pond.