Sir Alex
Dragon the eel (below)
StickShifty, I think your tank is too small for a tang. And I'll just stick with the kole tang.
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in his pictures, with the little amount of live rock he has, his water volume is probably close to my aquariums water volume based on how much live rock i have. Infact, i only made 60 gallons of saltwater when i started mine and had to remove some when i added my sand and rock. Would the total amount of water in the tank be the main factor for the fish? Considering the tank is 48" long like a 75g and only 5 inches less in width. Then again, i'm new to this and still have a lot to learn.
And I still think any of the smaller tangs will do well in a 75. But that's the bare minimum for me.
Purple tangs are usually quite a bit larger than yellow tangs and tend to be much more aggressive. I wouldn't put one in less than a 125.