well jack was entirely to rough for my albino oscar he wouldnt leave him alone and shreded his fins so i went back to my lfs and traded him in for a 4 inch red oscar and they seem to be geting along ok alil rought but i think itl b ok a shame tho the jack was beautiful

sorry to hear abut your jack problems. i do know what you mean though i had the same prob with mine but i got him his own tank. hope your oscars get along long term for you(and your tnak is big enough).