May 27 2014. See http://www.zoochat.com/13/review-aquatopia-366494/
Regal tang, but there are plenty of other common names, including 'hippo tang' (more commonly used in the US).
EDIT: or you could follow children around the world and stick with the safer 'Dory' after the character in 'Finding Nemo'.
Thanks devilfish, will change the title but refuse to call it 'Dory'
Separate names with a comma.