somewhat confusing, but here it goes! once upon a time, (about 3 months ago) i purchased 3 tangs- a yellow tang, a naso tang, and a blue powder tang. (i introduced them at the same time so they wouldnt get so territorial agaisnt the others) later, the naso tang and blue powder tang both died of ich but the yellow tang survived! so now, do you think that if i purchase another tang, possibly a blue hippo tang, about 2 inches big, while my yellow tang is about the size of a regular post-it sticky note, then they would get along swimmingly? (btw, i feed my aquarium a little bit every day but not too much)