I've had them less than 2 months. It doesn't matter what I do, they run and hide as soon as someone even comes in the room. During the day several times I've stayed in another room for extended periods of time and will occasionally peak around the corner to see if they come out to forage or anything and they don't and that's with the lights out. They stay hidden ALL day long and only come out like I said before, after the lights go out at night and there is NO movement in the room. Even then, only the 8" and one or two others come out and that is only when I have some cucumber clipped to the side. When I go to clean the tank they freak out bad, slamming into the sides and everything. I have 4 small gouramini, 3 yoyos, 2 very small tire track eels, and a juvie fire eel in with them. As far as the lights go, I keep them on a timer that runs them from 5 pm to 11 pm. Everybody else in the tank is very social. I even already have the eels eating from my fingers in just a couple weeks. I just can't seem to calm these cl's.