IMO, bream - yes and all your new gf fry will be history
IMO, bass - no because ALL your GOLDFISH will be history!
and so, I am right now looking for 2 bream to put in the pond ... I'm being overrun by literally thousands of rosyredminnow and gf fry ... hopefully the bream/bluegill/sunfish will solve my problem without disturbing the grown gf/koi...
Keep Smilin'
John