Well, any suggestions? If this helps, the tank is a typical 29 gallon.
Opercularis is actually high on my list, but I am not sure about it since my best odds for success (pretty close to guaranteed...I've noticed that PF's are not nearly as nasty when kept in numbers) would be to have a harem with three females and a male, and female M. opercularis are tricky to find (my sole PF at the moment, Pearl, was the only definite female when I bought her). Occelatus could be an option, but finding it - and affording it! - may be a headache.
They show up on Aquabid now & then & aren't usually particularly pricey; they've gone for $25.00 a pair or $30.00 for 6 juvies. Club auctions are also a good source; that's where I obtained mine. A biotope tank with them, white clouds & Puntius semifasciolatus, gold or wild type, would look fantastic.