I need a fish ID please

[JamesJR]

I would say from the less steeply sloped forhead of the fish and the anal fin being straight down (acuminatus have a much more pointed anal fin), I would say with a pretty high certainty that you have an dipreatus, not an accuminatus. It is still pretty young and it can be hard to tell for sure at a small size but I would bet you it is a diphreatus.

 

[JamesJR]

Of course anyone is free to dispute it.

 

[SDguy]

I was just looking through the fishbase pics, and I swear some of those must be interchanged accidentally....just look at the more or less pronounced snout....

 

[ozadars]

<a href=showthread.php?s=&postid=10656767#post10656767 target=_blank>Originally posted</a> by SDguy
Heniochus diphreutes & H. acuminatus. I personally don't know the difference. For clarification, can you guys describe the differences (physically)? The WetWebMedia pics look IDENTICAL to me

The black band that runs through the anal fin helps us to identify.

H. acuminatus

H. diphreutes

Look at the black & white parts of the anal fin. Its %50 white - %50 black for H. diphreutes. However, in acuminatus its %60 white - %40 black.

The angle of the black band also helps.

The band is continious in H. acuminatus

It has a break in H. diphreutes

Angel7989's fish has a continious black band and the anal fin is not half black.

If you check more photos of these fish through internet and look into these two details, you will understand the difference much easier.

HTH

 

[SDguy]

Thanks!

That 10% difference is sooo much easier to see when they are preserved specimens right next to each other All LFS should keep some on hand :lol:

 

[ozadars]

Its definately not easy to see but once your eyes get used to it, its hard to confuse each other

 

[SuperNerd]

Bah...I still can't tell the difference in young specimens.