RBT stomach contents in Condellos old place demonstrated they prey on YOY fish of all species per Ken's observation. Enough to control BG populations? I would strongly suspect they would NOT be able to keep up.

HBG might work, or RES as a companion lepomis species to RBT. Or, per Bill's suggestion, what about YP, SMB, and RES in addition to your RBT? 3 will easily pellet train, and the RES will clean up your crustaceans and do well I think.

If you are committed to BG/RBT - per Bill, go single sex BG is my advice.

Many men go fishing all of their lives without knowing that it is not fish they are after. ~ Henry David Thoreau

[Linked Image from i1261.photobucket.com]