My 55g is barely enough for my single Ignitus. I dont think most anthias would be happy in anything smaller. With the exception of possibly a sunburst.
My fav fish hes awesome, always out and can hold their own. Make SURE its eating before you buy, they are typically hard to get to eat in captivity. I use PE mysis and it worked within 3 days
My disbar does great alone. He's never gotten that big and did fine in my old 45 gal cube and now is fine in my 40 breeder. My carberryi anthias are much bigger and I wouldn't recommend them in a small tank.