remove the chop stick, the fish is stressed enough. Sounds like a swim bladder problem. If you have a seperate tank, even if its a ten gallon, get him in there and get your temp up, 77 is too cold, at the least 82-84 but do not go higher then 87-88 or this can stress the fish out even more and cause him not to eat. Keep the light out and be patient, give him sometime even if he's not eating.