how to tell the difference between H. acuminatus from the H. diphreutes

[LSKreefer]

Hi, I'm trying to figure out how to identify between the two different types of the heniochus. There is a lfs that is selling some but I'm trying to identify which one. I don't plan to have a full blown reef aquarium. What I have is star polyps, some Kenya trees, toadstool, and a few area starting with some zoes. So would either of these be ok, or should I shoot for the H. diphreutes?

Here is a picture of the one in my lfs, can anyone tell me which one that it is, H. acuminatus or H. diphreutes?



Thanks for any feedback. I also have a naso tang, kole tang, and yellow tang, so will they get along with them?My Tank is 240gal
Linda

 

[shaka]

The one in the center ( second from the left ) looks like Diphreutes to me definitely, yet the first one on the left ( with the shorter dorsal pennant ) looks like Acuminatus. It looks like Acuminatus to me because its snout is slightly elongated. Sorry if that just adds to the confusion.

I've also had both and I noticed that the Acuminatus were very aggressive with each other, but the Diphreutes was much more peaceful. I mention this because the other fish in the photo, on either side of the one in the center, have beat up fins ( shorter dorsal spine and tattered pectoral fins ).

 

[SDguy]

http://www.reefcentral.com/forums/showthread.php?t=1626751&highlight=acuminatus+diphreutes