I've had my betta, Vincent, for over 3 years, and for most of his life he has been doing this weird behavior that i can only describe as coughing. He'll be chilling out in his tank and then all of a sudden he'll start moving his gills rapidly and open his mouth several times, and each times he opens his mouth he expels all these bubbles! After this episode of coughing he hurries up to get a breath from the surface and then he just goes back to his business like nothing happened :shock:. It doesn't seem to bother him at all, and he's always been perfectly healthy, but it kind of scares me sometimes, especially when he does it several times in a row. My other betta doesn't do this, and neither does my mom's betta. Does anyone else's betta do this???? Can anyone tell me why my betta does this??? it's pretty odd :-?.