i have question about certain fishes, i recently setup my first big tank other than nanos, ( a 55g ) and its an open top tank. i want to pick up different anthias, chromis, 2 tangs. i have never really kept fish, its always been about the corals for me, so its unnerving to step into new territory. also i wanted to know if i put a sohal and an achilles tang together in at the same time will they be compatible? any help would be appreciated. thanks!