Is my 120 big enough

[Casey Gore]

Hey guys I have a 120 that is 2x4x2. It is really deep and I have alot of rock work and swim thrus. At my local fish store the owner said that since i have a 120 deep I could keep a sailfin. What do you guys think? It says a minimum of 180 online but will it get big or do they grow to their tank size? Also if not what tangs would you recommend?

 

[Kremis]

I wouldnt keep a sailfin in a 120 in my opinion, I have one in my 180 and they move pretty fast. In a 120, you could do some of the smaller tangs like tomini, yellow tang, scopas tang etc