i do feed pellets they only like koi pellets. i guess she likes given them a pinch of flakes while im at work, and no its not the other O hes much smaller and knows the big is boss. did a good vacuum and a 10% change gunna do 2 more 10% changes tomorrow just kinda iffy about it because the tanks divided and the other sides got my baby silver arrowana i just got 4 days ago so im thinken this might stress it the hell out?