Welcome to Pond Boss!!!

How deep do you think the pond is, and do you think there are any fish in it now/already?

Adding fathead minnows and bluegill are a good way to get started, and you really don't need to have catfish unless you want them.

I would also add some kind of cover into the pond to provide some refuge for the fish, and maybe some kind of shade depending on what you use for cover. Some live lily pads could do a job for you.

Also, will you plan to feed the fish? If so, your options increase vastly.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."