I started with red honey gourami, 3, as my larger feature fish in the 30 gal, but they have all been sickly and faded,  when everyone else is doing great (and from different stores).    So I'm looking for something different to add to the tank. 

This is a planted tank,  around 78F,  pH 7.0-7.5,  fairly soft water. 

Current residents:  7 rummy nose tetra,  1 siamensis, 2 false bandit cory cats. 

Looking for something between the 2-3" range, peaceful, interesting color,  easy to feed, that isn't a gourami, that's happy living in a pairs or small group of 3.   I don't mind paying a little extra for something special, or ordering it.

Suggestions?