55 Gallon Long vs 45 Gallon Tall

[Drewhop]

I recommend a 6ft tank for blue tangs (Dory). Going much smaller will be a problem in the long run. Honestly, a 75g will be a bit too cramped. I've tried it in the past and it just isn't fair to the fish.

I also have a 120 Gallon Tank that is housing a bearded dragon that i can move to another tank but that aquarium is 48x24x25. Do the tangs need the length or the area?

 

[MGDMIRAGE]

Length as they love to get up to speed. 6ft is the typical minimum.

 

[Fishfriend1]

i would recommend green chromis for starters. its a type of damselfish i think