My rhom is so active when he doesn't see me, he swims all around patrolling his 83g tank (right and left, up and down, he swims all the time when he doesn't see me, much more than my Araguaia rhom which I had a long time ago). Unfortunately he hides in the same spot when he see me, I know Serras need time to get used to their new surroundings. Do you think that he will be an active fish when he comes out of his shell?