:grinyes::grinyes::grinyes:
30 gallons offers a lot of options:
shelldwellers
julidochromis
calvus
leleupi
all these fish, minus the calvus, will breed easily in the aquarium. So if you do not want any more fry I wouldn't suggest these guys. On the other hand, cicihlid juvies (especially tangs) are much more coveted in LFS's than livebearers.
edit: nevermind then. you will probably run into problems with space and aggression when the cichlids are adults.
dont forget nano cichlids there awsome little buggers