i like the transcriptus the best. but i can only have one pair in the tank??? and i might do larger shell dwellers now that i think about it. maybe some occies and brevis would be nice. one colony on the left and one on the right with a large rock formation in the middle and terrace the back corners of the tank with shells going all the way up. and them probrobly praecox rainbows on the top of the tank. maybe something different if i can find them anywhere. how many rainbows should i get, im pretty sure at least 6 since they are schoolers(right?)