Today, I discovered my Anthias partially eaten on the sand.
He was lively and eating yesterday.
All other fish (and corals) are fine, and I just tested the water (no ammonia, nitrite, nitrate, pH 8.2, Alk 8.5, SG 1.026, Temp 79).
Does this sounds like old age (have had the fish 2.5 years), or a predator?
The only suspects would be a larger female sally lightfoot crab, or a pistol shrimp that's been with me for 6 years and is fully grown (I assume). About 3 inches long.