I recently picked up 3 clown loaches at my lfs. they had them for over a month and 2 of the ones i got are fat and well fed. The other is a bit small. Well i have them in my 55 gal tank, all parameters are optimal ammonia = 0 nitrites < .1p/ml and nitrates = 0 ph = 7.4. So they have been in the tank since sunday. The smallest guy swims everywhere, even with the danios i have at the top. He must thing he is a danio heh, and he eats plenty. One of the bigger guys comes out but is rather timid and hides when i come to the tank. The 3rd one is probably the biggest, at best 2", but has not come out from under their rock yet. I am not sure at night, but during the day it stays under there. I don't know if its getting food or not. Is this normal for these guys? I have had them in the past and never had one do this. Any help is appreciated.