I recently cought 2 perch in the local lake and kept them with my Cichlids without any problems. I kept them for awhile and then released them back into their lake.
My LFS recently had a Malawi trout. I believe it sold for $20-$30 range. I would perfer the compressicep though. Dimidiochromis compressiceps, whose name is derived from its compressed body, uses its extremely narrow body to its advantage in ambushing prey. It hunts with its head angled downward, and its narrow body outline toward its prey so as to minimize its visibility.
Haps are only moderately aggressive. They live away from the rocks and cruise the open water alone, and are seldom seen in groups. Haps have long, slender, almost torpedo-like bodies, which allows them to suddenly burst into speed. This suits their predatory behavior.Haps have developed some very unique hunting adaptations, which makes them fun to watch.
-S42K

[This message has been edited by S42K (edited 07-17-2001).]