ive had a couple arows in the past and they always stayed at the top. i recently sold my 180 and put up a 265 yesterday. i then moved my 10 inch arow into the tank were he seems to stay about a inch off the bottom of the tank. he eats good and everything so i was just wandering if this was normal for a smaller arow or what your thoughts are on why he prefers to stay middle tank or below.