goldenpond, if you are going to add warm water species (ie largemouth, bluegill) you may want to read some of the posts about supercooling a pond by aeration in the winter. For 2 years I couldn't figure out why my fish were coming out of winter in such poor condition. This winter, I did not aerate and avoided winter kill through other methods, my fish are in spectacular shape this spring. I believe it made a HUGE difference in the body condition of my bluegill.
