Rabbitfish Blowing Bubbles..?

[Schweet_One]

Ive had a double-barred rabbitfish for four months now. The whole time ive had him, he somtimes pulls air through his gills and "blows bubbles" on the top of the water. Ive had many fish and ive never seen them do this. Could he have a fluke or something? i have not noticed him rubbing or any other odd behaviors... Has anyone else seen their fish do this before?

 

[raddogz]

My swallowtail angel gulps in air from the surface and swims towards the bottom of the tank and releases the bubble of air. She does this from time to time

 

[bradleyj]

My rabbitfish does this all the time, especially after feeding. He goes to the top of the tank and gulps air. I've had him for over 4 years.

 

[Freed]

Mine does this too. Hovers at the top and gulps air all the time. No, there's no ich in the tank. He just does it for the heck of it.

 

[yukonblizzard]

My Hippo does this mostly after a meal gulping air then swiming down releasing the air through his gills.