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					Originally Posted by  VFX
					 
				 
				It really depends on which ones you're thinking of. 
 
Some may cross hybridise in the wild, others could be aggressive towards conspecifics. 
 
Size also matters sometimes.  2 different species of butterfly may liver happily together if they are similar size but if one is much smaller it may get harrassed to death.   
 
Probably best to give a list of the ones you're thinking of & then people with experience of the could chime in. 
 
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Thinking of 2 from this list
Raccoon (Chaetodon lunula)
Auriga (Chaetodon auriga)
Vagabond (Chaetodon vagabundus)
Latticed (Chaetodon rafflesi)
or maybe even a Heniochus (Heniochus acuminatus)