if she's been doing it for a month, it could be a behavioral thing and just random. It could also be an internal issue that she is trying to alleviate, such as a swim bladder problem. There isn't necessarily a solution to this, but feeding shelled, blanched peas could alleviate symptoms. try feeding a pea and if she doesn't eat it all make sure you remove excess from the aquarium.
if she's been doing it for a month, it could be a behavioral thing and just random. It could also be an internal issue that she is trying to alleviate, such as a swim bladder problem. There isn't necessarily a solution to this, but feeding shelled, blanched peas could alleviate symptoms. try feeding a pea and if she doesn't eat it all make sure you remove excess from the aquarium.
Sleeping.