No, its not. I'm guess that you recently acquired this fish? Do you notice anything else wrong with the fish? White film on body, dots on body, etc.?
Moving your topic to the Disease Forum.
I've had him for almost three months now... He looks ok right now... I think I know what happened... I think he ate some of the rubber or whatever biocube uses to glue the acrylic to the back, and then threw it back up... Is that possible?
Ok, he looks alright now, he's swimming a bit more than he used to. He never used to come much farther down than the live rock, but right now he's right where my scooter blenny hangs out near the sand bed.