Spring is here, my goldfish have survived their first winter outdoors, and surprisingly so have the gambusia!  There seem to be quite a few gambusia still around, which is cool.  I wasn't sure they would survive the winter, but they did.  The water temperature still isn't holding above 55*f, so no feeding yet, but soon:)  Once it is steadily warm, I may add a few small koi and I am very interesting in finding blue bitterlings.  I think I may decide against adding golden orfs, they seem more delicate and seem to need a very large pond to be happy.  I might also try zebra danios and white cloud minnows in the pond and see what happens with them.  I think if I have enough plant cover they will survive being eating by the goldfish and koi.