I've had a 8 inch oscar for about 2 months now. In the time that I have had him I haven't seen him eat once . I've tried feeding him feeder minnows , feeder goldfish , oscar food , and i've even tried feeding him some turtle food . But nothing seems to be working . He's in a plenty big tank (60 gallons) and I just can't figure it out . (the water parameters are checked daily and haven't changed at all .