I have the exact same fish, and he's just a little bigger than yours. I thought he had died a long time ago and then he appeared in a new area in my tank. I think he might have paired up with one of the pistols that hithchiked on my LR
but i'm not sure. He will disappear for a week or more, than show up and look nice and healthy. He used to be out in the open all the time for 3-4 months, then I guess he decided to start wandering through the depths of my LR
. Funny little guy, I just wish he was out in the open more often.