I went to my bedroom to go to sleep not too long ago. I turned the light on and said hello to my betta and he came right up to the glass like usual. I turned for a moment and the next thing I know he was lying with his mouth on the bottom and his body standing straight upwards. I went closer and he started darting all about sideways and such. He'd stop and dive down face first again and sit there. He continued doing this several times. The last time he darted sideways into the plant and just laid there, as if he were dead. I couldn't watch anymore, but I couldn't climb into bed and go to sleep knowing this was happening. I searched and found that is might be common for bettas to have seizures. What does this mean? Is he dying? Is there anything I can do? Please help!