Anyone have good mail order sources for plants and fish?

Are there any places or people interested in trading plants and fish?

I am currently stocking a new pond and I am looking for reasonably
priced resources. I got some reeds, lots of anacharis, and water
cabbage from my old pond. I will forage around Louisiana and
Mississippi for what is locally available in wild plants, but would
like some other stuff. Comets at a local place were $6.99 for an
aprox 4" fish. Water lillies $30 to $35.

Anyone use Sringdale Water Gardens?