mine is 6 in also...... sh's housed with a large yellow tang, 5in panther grouper, 4 in heniochus, and a 4 inch skunk clown,
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the heniochus was abused when it was introduced...but she let it go after it proposed no threat. My problem is adding new fish that pose any threat! such as large triggers ...or wrasses!! It stinks caz i wanna add color 2 the tank since i have a 180 ! I would get a volitan but , that clown will just be a meal eventually!! SUCKS!!!!