Those are really nice pikes, my favorite small pike for sure. I would use a group of juvenile Geophagus or Satanoperca for them.
Photos???
Did you find someone selling compressiceps? I have been looking all over and can't find any. Everyone says they aren't available.
Deeper bodied tetras like serpae, diamond, or blue flame would work also.
Clint ~ He lives in Canada, Oliver and Spencer can get just about anything.