Sorry to hear it, Tijl. In a grim coincidence, I also lost a Bullseye a couple of days ago. Mine was totally preventable, though. It was in a plastic bin because I was trying out a different combination of pairing. I left 2 in the main enclosure and moved this other one out to a temporary enclosure. I just didn't get the lid back on properly after a feed and mine escaped. This stuff happens in the hobby, but it's still a punch in the gut.