You could have hornwart with some ryukins, black moors, fantails, etc. They get to a good size and depending on color/pattern they can be very impressive. Everyone is used to seeing the babies at the pet shop, so seeing them 6+inches eye catching.
I never post pics of my cold water fishies, so here is one of mine.

I never post pics of my cold water fishies, so here is one of mine.

