I came home today to see my betta very bloated and floating. When I left for school this morning at 7am, everything was fine. I havent fed him since nor changed anything since I woke up. I do weekly (at most) changes of water in his bowl and feed him about 4 betta bits / 3 small freeze dried worms a day. I've owned him for about 5 months now, in a 5.5 gallon till a month ago when the filter started eating his fins and I had to move.
He usually has a huge bubble nest for me when I get home, but today there isnt one.
Does anyone know how I can relieve his bloating or what it is? Deadly, or can I wait it out? Should I feed him?
He tries to swim down, but instantly he floats up. (my avatar is how he normally looks, minus tons of camera flash)
Pictures:


He usually has a huge bubble nest for me when I get home, but today there isnt one.
Does anyone know how I can relieve his bloating or what it is? Deadly, or can I wait it out? Should I feed him?
He tries to swim down, but instantly he floats up. (my avatar is how he normally looks, minus tons of camera flash)
Pictures:


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