Sadly our coral beauty passed on, the same day I posted this note.
>>stress ... aggressors in the tank<<
I think that was probably the main cause. Temp, ph
, salinity have all been stable for a long time, and NH3
virtually nil. This coral beauty had always been our most timid fish, though not the smallest, which is a healthy blue damsel. Our aggressive blue velvet damsel and our maroon clown are both larger than this CB, and would sometimes chase it. But this CB was the least aggressive in competing for food.
We've been feeding a combination of the frozen angel food (primarily marine sponge I believe) and Tetra marine flakes. This CB only seemed to get the flakes. I wonder whether diet could have been part of the problem.
We just got a beautiful emperor angel to replace the CB. This EA is larger, a bit bigger than the BV damsel and the clown, and they seem to ignore it. I hope these five (green puffer is the 5th) get along well.