I have a 25g with live rock and one baby green chromis that I never see except to peek in a crack in the rock and see the little 'swimfins' fluttering. :huh: Needs some tankmates... soon baby soon.
Neither of my tanks are very stocked. 10g with 3 DP's, and a 25g with 1 3" GSP. However, there is a tagalong in the 25g, a feeder platy type fish that came in the bag with some ghost shrimp. And now she's had babies!