That is a pretty small tank for some of those tangs. The sailfin is just plain out in my opinion...they get HUGE (15+")...maybe you can find a small one but even if you do, they grow pretty fast and they love to swim.
I would also definitely not get a powder blue for a 75. They are among the most sensitive of tangs and it would likely be stressed in a tank that size even when fairly young -- they love to swim. Roughly 9" full grown but again, I think with this particular fish it is not so much about just the size as it is its attitude/sensitivities.
The Kole is generally the smallest of the bunch (~7"). They have a pretty neat color change from juvenile to adult. I prefer the Pacific form (v Indian Ocean form). Don't see many locally though.
Or just stick with the Yellow, which is really your best bet (according to Scott Michael, they can grow to about 8").
Are there many other fish in the tank? Do you care about them? If so, those are more reasons not to add the Powder Blue or Sailfin -- both of these fish have reputations of being aggressive, especially in smaller tanks. My sailfin came from a much smaller tank and was nipping at corals and being very aggressive with the other fish...it hasn't displayed any of those mannerisms since it has been in my tank (350g).
Pic of my some of my tangs (no sailfin pics):
The last shows my yellow and my pb...the yellow looks much better now that he's put on some weight.
I would also definitely not get a powder blue for a 75. They are among the most sensitive of tangs and it would likely be stressed in a tank that size even when fairly young -- they love to swim. Roughly 9" full grown but again, I think with this particular fish it is not so much about just the size as it is its attitude/sensitivities.
The Kole is generally the smallest of the bunch (~7"). They have a pretty neat color change from juvenile to adult. I prefer the Pacific form (v Indian Ocean form). Don't see many locally though.
Or just stick with the Yellow, which is really your best bet (according to Scott Michael, they can grow to about 8").
Are there many other fish in the tank? Do you care about them? If so, those are more reasons not to add the Powder Blue or Sailfin -- both of these fish have reputations of being aggressive, especially in smaller tanks. My sailfin came from a much smaller tank and was nipping at corals and being very aggressive with the other fish...it hasn't displayed any of those mannerisms since it has been in my tank (350g).
Pic of my some of my tangs (no sailfin pics):
The last shows my yellow and my pb...the yellow looks much better now that he's put on some weight.
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