I don't know if it's just my imagination but I think my clown loach has grown significantly within one week. I bought all my fishes (4) at once 6 months ago. The loach was the big boy then and then everybody got into growing ad he got left behind. About a week ago I replanted my tank and moved some things around and some were taken out of the tank. The loach hid in his cave majority of the time since. He wouldn't even come out to eat! He just came out today and he has grown not in length but in "height". Probably about 3/4 of a centimeter. Do clown loaches really hibernate when they're increasing in size? Is this a normal behaviour?