Yep, you're probably right and they are winged ants. I first thought they were ants but saw wings on some of them. I really didn't get all that close to check them out. I dumped some out yesterday, I was hoping the fish would come over and eat them but they didn't. I do have ants on the lily pads, I have no idea how they are getting there but probably where the pads touch the side of the pond somewhere. It's almost like a flytrap or something, it looks like they get in there and can't get out because they are all kind of swimming around.