two to many?

I am looking in the far future and well after the tank is really established but I was wanting 2 of these fish (Heniochus Black & White bannerfish) in a 48x21x18 tank. There will be other fish and it will more than likely will have a hi bio-load. there will be a reef octo-200 skimmer in a 30 gallon sump and I will be running Ecobak with about 100+ lbs of rock.

I aalso want some info from others on here about how hardy these fish are, I really really like and want this fish even If I can only have one in there.

Edit: the fish is Heniochus diphreutes

 

I've always been a fan of Henoichus but could never have one in my reef. The dimensions on that tank sound good, is that a 90g? They're usually rated for 50g+. I would say 2 would be fine as long as you don't have corals.

 

its a 75ish gallon thats why I want some real world input on there behavior and how hard they are to keep and is they really do mess with corals?

Edit: there was a mix up on the actual fish on my part

 

I would say pretty much 98% they are not reefsafe, not like dwarf angels that are 50/50. My LFS gets them constantly and I"m good friends with the owner and he says def not with corals & he is usually pretty easy going if they "might" work. If there was a chance he would have sold me one by now . BTW I have mainly LPS, Softies

In my research on them I had come across discussion on Butterfly's and reef safe behavior. I read a lot about people having ones that began fine & then all the sudden began decimating their corals, so that's why they err on the side of caution & say they're not reef safe. Not worth the game

 

the tank I am wantint to set up will be most of the same LPS/softies with a few SPS but I really like this fish but I thought it was reef safe?
or am I thinking of a diffrent fish?

 

real quick is it (Heniochus diphreutes) that im asking about not (Heniochus acuminatus)

 

bump-tity bump bump

 

Diphreutes should be ok in a reef setting. Acuminatus not so much.

Seems like 75 is the low limit for multiples.
FishProfiles.com - Heniochus diphreutes

 

according to that im just at the mark for more than one but is it better to have odd or even numbers?

 

The diphretes is perfectly reef safe. Once you have it eating, it is a fairly hardy fish.

Read up on the identification traits.... most of the time they are mislabeled. This species is very difficult to ID if you don't know what to look for.

Very small frozen foods is a good place to start. Finicky at first, but will soon take anything that hits the water.