I have a funny observation. I think becasue they are deepwater angels, they have no concept of the surface. The few days after capture, they seem to be trying to jump out of thier vats (as do Crosshatch trigger). I think its because they are trying to swim up then they hit the surface and get really confused. I always consider them very friendly and thats one reason why. Even when I first started feeding him, he wouldnt eat from the surface. He kept swimming up right near the food, like he was trying to get a better angle on it. He got it now though, and he doesnt behave the same. He is super friendly and charges at me when I come by with food. I have him housed with fairy wrasses and he doesnt even let them get thier mysis!