We added two more fish last week and will probably stop there (though we lost one of the empresses last night). "Peach" and "Blotch" (how original huh?).
Its looking good! I must say good job on the slate stacking. I would not go any taller, you wouldn't want a large rowdy fish to come and knock it over or anything. Looks like a nice combo of fish as well... is that a rainbow fish i see!?
A black background would look good and help the colors stand out more, if its at all possible.
hehe