I have a school of 6 Red Irian Rainbows in my severum tank. Similar to the Bosemani rainbows, but they are a nice deep red/orange most of the time. Mine maxxed out at around 3-4 inches. The change from a bright silver to the red/orange almost daily. Very active, attractive, and don't seem to be bothered much by the cichlids.
Ryan
Ryan