What is considered fast/labored breathing?

[MazdaSPD3]

Hi, I have several tangs and I notice they seem to breath a lot faster than say my clownfish.

I've had them for well over 2 months and they are complete pigs, fat as they can be. The only thing that concerns me is their breathing rate.

What is considered fast or labored breathing?

 

[sassafrass]

I would compare them to each other not the clowns from what I have seen fast or labored breathing is pretty obvious just like with people

 

[luntiz]

Bump for more responses, as I also seem to notice some different rates of breathing amongst my fishes.

 

[firebirdude]

They have been doing this for 2 months straight?