Heniochus Diphreutes?

[uFnEC]

Hi guys,
need some help in identify a heniochus diphreutes or acuminatus

I have checked the old post and still can't confirm if it is diphreutes or not.

http://www.reefcentral.com/forums/showthread.php?t=1626751
http://www.reefcentral.com/forums/showthread.php?t=1271164

- The diphreutes' anal fin drops down at a 90 degree angle from the tail
- The diphreutes "chin" curves directly down and toward the back. Acuminatus, on the other hand, has a bit of an S shape (a double curve) below the mouth.

the one I have seems to be have diphretues tail and acuminatus mouth

thanks

 

[SDguy]

It's diphreutes.

IMO mouth shape is unreliable at that small size.

 

[uFnEC]

Ok thanks
So for the small size, the tail is the key?

 

[SDguy]

Ok thanks
So for the small size, the tail is the key?

Anal fin.