I put my 2 blood parots in my my 4 inch oscars tank. they where doing fine for about 5 minets then my 4 inch blood parot picked a fight with my oscar and they started flaring at each other. then the oscar tried to lock lips with the 4 inch blood parot after that I took the 4 inch blood parrot out. then my oscar started chasing the smaller 3 inch blood parot so i took him out to. I think the 4 inch blood parrot was trying to defend the smaller 3 inch bllod parot. what should I do to make them get along if there are any ways. they are all in a 65 gallon tank and i am upgradong to a 75-90 gallon tank. sorry for any spelling mistakes. Thanks and I have a 5 inch common pleco in the 65 gallon to.