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- Aug 5, 2017
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So I had a purple tang in a 155 gallon tank for 6-8 months before adding any other fish. The second fish was a yellow tang. My experience was unique. Maybe because he was by himself for so long, but there was almost no aggression. Afterwards when there were more fish did he start being territorial. That yellow tang was a rescue from a biocube. That chronic stress absolutely showed. He did not have a long life. IMO zebrasoma should be in a minimum of 6'. In the perfect world I would have a large circular tank that would allow infinite laps. Having zebrasoma school together is an incredible sight to behold.


