Hello! I received an RBTA yesterday, about 2" across maximum. He latched onto a rock right away and then descended down into a small hole in the rock, deep enough inside that I can no longer see him. Will he be okay? I've lost 3 anemones (1 long tentacle, 1 maxi mini, 1 BTA) in the last 2 months, 2 to a powerhead and 1 to something else (he died within 12 hours). 125g, params are fine and have been for many months.