I've got a 3 to 4 inch red devil that hides in a ornament log when ever I'm near the tank it also never eats in front of me. It has been in the tank about 3 weeks but ever since I have empties its tank mates because of aggression or he/she killed them it has stopped being active whenever I am near the tank. I have to peer at the tank through a slightly open door which isn't ideal as I really wanted a wet pet and an active fish. Has anyone else had this before it will not tolerate tank mates I've tried malawis twice it's size and it killed them all within 3 days. Any help would be great as I really want to grow this fish up. The only thing I would add is the tank is not in a heavily trafficked area