Beautiful fish, one of my favorite apistos. Just about any tetra, danio, rasbora would make great schooling fish. Cories or kuhli loaches would be great along the bottom and otos for algae control would finish it off for me.
Went to the LFS and my other half fell in love with a pair of german rams. Anyway of fitting them into the equation rather than instead of the Apistogramma hongslois?