Heniochus black and white butterflyfish vs yellow tang

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chevypride

Aquarium Advice Freak
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Jan 15, 2014
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My new heniochus black and white butterflyfish and yellow tang are fighting. Since the lights went off they haven't fought, but I'm sure when the lights come on the war will be on.. I've been told a few suggestions (moving rocks, adding a mirror, dark period) just looking for more suggestions! My yellow tang harassed my hippo for about 6 hours but there inseparable now, so I'm hoping it passes but I'd like to make it easier.
 
Can you tell us more about the system? Though it may be them establishing dominance or territories, if there simply isn't enough room for them to establish such they will simply beat each other to death.
 
It's 120 gallon (2x2x4) there both about 3". I have a 6" hippo tang, who's completely mellow and care free, a clown fish who usually spends his time in the overflow box instead of the tank, and a 12" green bristle star who barely leaves the rock work.


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