dojo loach blowing bubbles?

TrpTwlght

Medium Fish
Jun 5, 2005
80
0
0
41
Tucson, AZ
www.authorhouse.com
#1
I'm fairly new with the loach world. But I've had my zipper loaches for a good 3 months, and they seem fine. A few weeks ago I added a dojo loach to the bunch. I've noticed he acts a bit different than the other two, but they all seem to get along, so I didn't think anything of it. Then I removed my betta from the tank, (the sharks were bullying him) and I noticed the bubbles at the surface of the water were still there. Up till now I'd always thought it was the betta blowing them. Today I finally caught him in the act, and sure enough the dojo is going up to the surface and blowing a bunch of bubbles!

I don't think its hurting anything, just looks odd. But I wondered if this is a normal thing for him to be doing. Or if he's trying to tell me something's wrong. Any ideas?