Oscars can be very aggressive. I used to have 2 blacks, 1 red and 1 albino and used to feed them raw mutton, frogs, live shrimps, live worms and goldfish . The red one started growing teeth, I kid you not!
But one of the black Oscars used to beat the other three, including the red Oscar. Real bully!
But one of the black Oscars used to beat the other three, including the red Oscar. Real bully!