So I have had a pair of lyre tail anthias in my tank for about four months. Both doing very well eating and swimming. Two days ago I noticed one was missing. I saw her swim out of a rock yesterday to only disapear again. The color looks good but she's not eating or comming out. Is this normal behavior for lyre tail anthias. I have not made any changes to my tank and no new fish added. Also I don't see any bullying I have two clowns blue spot jawfish flame angel and blue star leopard wrasse in a 75 gallon tank.