I have a 300g with a pair of jags @ about 12-13" ea. There was a 12" oscar in there for a little while. He just did not stand a chance. The Jags were just to fast and powerful for him. I had to get rid of him for his own good. Oscars are not very aggressive. And are very slow. Anything with a little bit of speed will just clean their clocks. Get rid of the oscar.
