bala sharks...they look like giant ugly minnows with a big fin....
and just recently gouramis, some of them are really pretty, but man they are vicious fish!
and goldfish and danios....I'll use the live bearers fry for feeders, not those dumb ugly poop machines now....
I'm not big on mollies/plattys, african cichlids, goldfish (I think bala sharks are goldfish, so I don't care for them, either), and most (not all) other cichlids.
Now, I would own most of the above list (as feeders in some cases) given the tank space and opportunity.