Pearl gouramis to go along with two post above me .
Need to know tank foot print.
Denison barbs and Congos for the win if your tank is big enough.
I'll be the one who recommends the fish no one will but all want. Clown loaches ,again if tank is right size [ inline with Denison barb ].
I have clowns now some over 25 years old that never spent one day in less then 135g 6' tank that are barely over 6-8 inches . They are not all the monsters many say and most of us common keepers can't imagine a fish living 25 years so what's to worry about.
The best fish of all, next to the Denison's in freshwater good sized tanks IMO.
I have had all the fish I spoke for and would /will again.