Blackjack,
I have to agree with Greg. Rainbows above all other salmonids, are easy to catch, grow fast, readily take pellet type feed and are available just about anywhere in the Country. We have tried brown trout, brook trout and even steelheads (couldn�t locate any inland salmon sp.) and rainbows out-performed them all.
Now the fun part begins!
Locate (if available) various strains or sub-species of rainbows. Some include; caribou, wigwam, hildebrand, shasta, donaldson, kamloop, steelhead crosses and many other cross breeds developed by individual hatcheries. Various sub species offer the Pondmeister an opportunity to view different color variations, growth habits, aerial acrobatics (or lack of) and temperature tolerances.
Cecil and others on this forum have a lot more experience with these cold water marvels than I.
Experimentation is part of the journey!
Ed