Here's a page on the eibli. Says it can grow to 6". Minimum tank size is 30g, however, I would never put a fish that can grow to 6" in a 3' tank unless there were plans for a future tank upgrade....
http://www.liveaquaria.com/product/p...cfm?pCatId=457
Bi-colours also grow to 6", and imo, not suitable for a smaller tank, etc....
http://www.liveaquaria.com/product/p...cfm?pCatId=433
Coral beauties grow to 4", which is more suitable for a smaller tank, imo...
http://www.liveaquaria.com/product/p...cfm?pCatId=438
Flames grow to 4" as well....
http://www.liveaquaria.com/product/p...cfm?pCatId=444
Don't know if any of these angels will pick at an anemone. Perhaps those with experience on this issue will offer their opinions.