what is the size of your tank Aquattro?

Currently a 180. No difference than when it was a 75 or 90 or 150

[quote=Aquattro;843958]Currently a 180. No difference than when it was a 75 or 90 or 150[/QUOTE

so, looking back when you kept these tangs in the 75gallon.
Can you comment on the activity of your tangs in your small 75 versus your current 180. By activity I include the constant swimming that is easily seen by reefers who have had the chance to view them in the wild.?
My commented the tangs have more swimming room. They appear to me to be happier swimming to and fro rather than kind of just 'hanging' around. The difference in their behaviour 4' versus 6+ is really noticeable.

Would you agree with my comment brad?

I would also ask those who have moved from small to 6+ tangs to comment as well. Thanks

[quote=naesco;843964]My yellow tang has been in 2', 4', 6' and now an 8' tank. I have seen no difference in behavior, granted he was only in the 2' for 5 months but he spent over 5 yrs in a 4' tank and has been in the 8' tank for about 8 months now. The bristletooth tang on the other hand, acts like the 8 footer is too small and is a complete jerk :frown:

I really want to, but can't :) I haven't found any difference in behaviour in any tang going from 4' to 6'. Even the faster acanthurus species, who get a bit squirrelly in the 4' stay that way in a 6'. I agree a 10' might make a difference, but not going from a 90 to a 180.

I think what might make a difference is a newbie starting with a 75g stacked with too much rock. Then moving to a larger tank where they scaped differently and provided a more secure feeling environment.

My kole tang seemed much more relaxed in its swimming patterns after it moved from my 97 to the 404. That's not to say it didn't seem happy in the smaller tank... it did seem happy.

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.

my yellow grew, but it was tiny when I got him, went from about 2" to about 5, my sailfin went from about 4" to probably close to 7" and my achilles tang doubled in size to about 6"

so I don't know what to think as this was all in a tank 1/2 of what you got.

Steve

Yeah thats what i heard to, but my hippo was 4" when I bought it, and 2 years later its 4".

Now that I think about it, all my tangs are pretty much the same as when I bought them. Maybe different tanks cause fish to grow, and other stunt them?

I've gone with the open and less live rock look on my rebuild and the tangs love the open space and are darting all over! My tangs are fat but have not noticed any growth since I have them (4+) yrs.. However, I should revisit this in a yr to see if it does make a difference.