Either
1. I fed some smelt that was allowed to set out all night and then i just re-froze and fed
2. Stress from me adding a couple of pups to the tank
3. Maybe constipated/ choking on something
I did treat with prazi for about a week, and then have returned back to normal drip's. When i decided to pull the divider he was still very faded and still not acting right, i was surprised to see he improved with tank mates, i was not expecting this at all.