I lost both of my maroon Linkia's yesterday. They had both been very very active, on the rocks, the glass. They were never physically near each other. Yesterday, I noticed that one did not look right at all, on closer inspection, discovered him dead between two pieces of liverock, the odd thing being that the other linkia was only about an inch away, also dead. There was evidence of some "picking" but it could have been done after the fact. Kind of hard to say as I work all day and did notsee. I do know that I have never seen any tank mate act hostile toward them before.