60g, 36 months old, only 6 fish in tank. Mine grow about an inch per year, ( my guess is it will be 5 years before to big) but happy to upgrade when that makes sense to do so.
Just an observation on Tang growth - I have a 6 foot tank and I bought a micro Hippo Tang the size of a nickel 15 months ago. It's now 6 inches long. That is way faster than 1" year. Is this due to being in a bigger tank? This is a different tang than the OP was taking about though.
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