ID > Heniochus Diphreutes vs Acuminatus

[Kaiserdeleon]

 

[SantaMonicaHelp]

Welcome to the community! What a cool looking friend you got there

~ CI

 

[eatbreakfast]

The only way I can tell is by comparing the back of the anal fin, which is not seen in this pic.

 

[Kaiserdeleon]

Hi, here is a full shot

 

[eatbreakfast]

H. diphreutes.

 

[Kaiserdeleon]

How to distinguish?

 

[eatbreakfast]

The anal fin on diphreutes is at a 90° angle from tail. On acuminats the anal fin tapers back.