[Bayinaung]

in the following video, it looks like he's got 4 zebra tangs?

 

[Bayinaung]

oops.. please move to the fish section thanks!

 

[teemee]

they're convict tangs...
if it's not your video, you should post who it belongs to, and where you found it - ie copps on Reef Central....

 

[ameekplec.]

Reefbuilders did a write up on Mauritian Zebra tangs earlier - and it's quite easy to see the difference:

http://reefbuilders.com/2013/09/16/mauritian-zebra-tang-fancy-convict/