Yeah he does pick at the algae on the rock. I’m thinking maybe he injured it picking at the rock? On Friday he was eating completely normal, eating anything I put in the tank. I’ll try the clam. He still rushes to the food like normal but won’t consume it.
Got two wild Sumatra Yellow Belly’s. They do love to graze on algae. If you can get live brine try that, but one of the magical foods I get 99% of non eating fish to eat is black worms. Brought back maroon clowns that decided to want to stave to death but is now thriving. Try arcti-pods. Clams make sure you cut them up small mine did not look at the clams at all.
Side note, of all the foods I have pellet wise, the easy reef has been my go to lately. And I’m picky about what I buy for dry food. Minimal fillers, and non of that starch crap that for example tdo has. My two favorites are new life spectrum and easy reef. The ER DKi 1.3 beta glucan is good for the immune and almost all my fish that don’t tend to eat pellets also eat these.
Any flashing or yawning of any sorts?