One of mine did that when I had a dino outbreak. He might do it for a few hours or two days. He finally disappeared. Two months after the funeral, I found him in my sump, smaller and white as a ghost. He did a couple of times after I put him back in the display, but as the dinos treatment kicked-in, it became a non-issue. I also had a fish with intestinal parasites so treated the tank with metro/focus laced food. Whether it was the dinos, intestinal parasites, or both, both of my YWGs have gotten big, bold, and eat more aggressively than ever.
