Yes
 

A little blue tang would be okay, but yes they do grow and they grow fast!
Levi

I advise strongly against a small Hippo Tang. I did that, before I knew better. Now I have a 4-5 inch beast who poops like a real hippo and eats all the food before the other smaller fishes have a chance. And I'm having a HECK of a time getting her out :)

He's right about the poop. Sometimes mine clouds up the tank pretty bad. Its like a poop shower. And the other fish go crazy for it. Grosses me out :razz:

I keep a yellow tang in 46 and his happy and eating very well.

The only tang you should even think about is a Kole or Tomini, and thatsprovided your 50g is a 50g long.

I am just curious as to why these two tangs are "exceptions" compared to others?? I am simply just curious. Are they not as active as other tangs??

Kole tangs are gorgeous...

One day...

I believe it has to do with the fact that these tangs stay relatively small compared to other tangs. Another option would be a lemon mimic tang. I'm getting one very soon =)

gee, the tang police are being rather low keyed

reason
 

I think the tang police are being low key for a few reasons, number one its a 50G so the tank isn't to small and second he doesn't own one, hes inquiring to own one.
Levi

I don't own one, and I'm not going to get one. I wanted to confirm my beliefs, before I bought one. Thanks everyone.