I'm currently thinking about getting a second, larger aquarium, and putting a couple of the bigger fishes in it - tang, butterfly etc.
I'm currently deciding on a Regal (Hippo) or Yellow Tang - I would only want one Tang in it.
Can someone tell me how both of these fare as far as the following things go:-
1. Do they both require the same amount of space to swim/graze (or does one require more space than the other)?
2. Is it true the Regal is susceptible to whitespot etc. more than other marine fish?
3. Are they both relatively peaceful if only one is put in a tank as the last, or one of the last, fish?
4. Do they both grow to similar sizes, and will tank size depict their maximum size?