i have a oscar about 7 inches long and he is alone in his tank, about once ever 2-3 months i buy him about a dozen feeder goldfish and i throw 2-3 in there every few days till they are gone then i go back to feeding him his normal food. i have been doing this for close to 3 yrs now. last month i bought my normal dozen and the last 3 i threw in there he never ate and they are still in there to this day. it strikes me as very odd becuse before when i put them in there he ate them in a matter of mins, now he seems to act like nothing is in there. now to my question should i leave them in there or what? i have no other tanks to put them into becuse i am currently living with family and room is limited. just looking for some feedback thanks.