I guess no one has answers. So I took him out of the tank and put him in a hospital tank and started him on Metro. Not feeling great about it but not the first time of losing a fish and will not be the last.
A Happy ending! ..and note to others who feed peas....I looked at him this morning and the first thing I noticed was a perfectly round pea on the floor of the tank and I knew my first impression had been right..that he tried to swallow a pea whole and it got stuck in his mouth! He is fine now and back in the big tank.