Our betta, Buster, is not looking to well. He is hanging out near the surface on top of plants, looks bloated, and has been acting out of character recently. We did a 30% water change, and added Prime in case ammonia levels were high (we were both up at extremely early hours this morning for work and weren't thinking straight, so we didn't test the water before adding Prime). We are thinking that we should fast him and continue water changes for the next few days. Does anyone know what could be wrong and what we should do? Any ideas would be much appreciated! Thank you!