Okay, so I've had my betta for a little over a month. She is in a 5gal tank with a pleco, a snail, and a few tetras. She was doing GREAT! Till now for some reason.
She lays in the bottom of her castle. Then she'll shoot out the top and swim around the tank while she sort of rubs herself against the plastic plants and the filter. It only last for about 20 or 30 seconds. Then she'll go back in the castle and lay down. She hasn't been eating a lot. And when she gets her little bursts of energy, she'll swim to the top for air. I have NO idea what's wrong with her.