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Originally Posted by naesco
I would also ask those who have moved from small to 6+ tangs to comment as well. Thanks
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I am assuming you mean 6' + tanks?
I put a 3/4" long Blue Hepatus tang in my daughters 29g bio cube. After 1 yr it had grown to about 2". The tank was taken down and the fish went to a customers tank that was a 240 gallon @ 7' long. The tang doubled in size in about 6 months. The only other tang in the tank was a 3" Yellow Sailfin.
I have had a Purple Sailfin in a 4' x 8' tank for several years and it has not grown much more than 1/2". It grazes all day and is also feed Pacifica Plankton once a day. System volume is about 800 gallons and I use Ozone on a regular basis, which will break down any pheromones.
So really who knows why fish grow and don't grow. Change sexes etc.