They been in the tank together for about 6 weeks now. One is 4.5in the other is about 4". I dont get it. Could I have two males? They keep locking mouths and charging at each other. My blood parrot breaks them up. They use to hung out and be real cool with each other. What happened?

this is in the 45gal correct?

yes so thats the problem?

J-MASS wrote
you have more on space issue... 4 to 5 inches oscars are still consider juvenile.
due to space limitation, they tried to establish territorial supremacy. if one
submit to the other, there will only be an occasional shoving but once the other
one want to stand his/her ground, bullying will erupt again. just keep an eye with
them, if bullying can hurt one another, then a separator can be installed...
but for a minor bruises, leave them alone...

ook cool thanks. I was just worried cause im really attached to them and I domt wanna lose one.