My blue hippo tang will pick up snails and corals and hide them behind the rocks. lol I think as long as he is eating he is gonna be fine. Just chalk it up to odd fish behavior.
180g- Mostly BIG fish and some coral. ~80g Nuvo- My coral tank with "happy fish"~ 90g- FOWLR Not the not happy type of fish~ 125g- Freshwater Malawi Cichlids ~10g- Nuvo- The refugees from the Ich of '18