My experience with the clown loaches have always been very similar to what you are describing. One of my loaches continually pushed over one of the decorations in the tank that is hollow and hides on the inside. He comes out at night to feed, so that is when i put in the sinking pellets. If i put them in the day the loaches would not see a bit of them. So every morning when the loach is out of his hiding spot i put the decoration (statue) upright and ten min later it is knocked over and he is back in there jamming his little body as far in as he can. He's been doing this for about 6months now.
My experience with the clown loaches have always been very similar to what you are describing. One of my loaches continually pushed over one of the decorations in the tank that is hollow and hides on the inside. He comes out at night to feed, so that is when i put in the sinking pellets. If i put them in the day the loaches would not see a bit of them. So every morning when the loach is out of his hiding spot i put the decoration (statue) upright and ten min later it is knocked over and he is back in there jamming his little body as far in as he can. He's been doing this for about 6months now.