Gambies aren't native to most of north america, their native territories are
around the gulf of mexico. But the vector control districts don't have a
problem with introducing them to any body of water, even though in
hindsight, it might have not always been the wisest idea.

Out in northern california, they'll just dump a bucket full of them into the
flooded rice fields, especially after people started getting west nile.

-S

It is too bad they don't research native frogs and put their tadpoles in,
granted they won't last the whole season, but the rest of the time
something like mosquito dunks, that they add in a much cheaper form, would
work. The problem with gambusia is they eat all frog spawn, native fish
eggs and fry... as I'm sure Rosie Reds do also. :-( ~ jan
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~Power to the Porg, Flow On!~