Dagon

I'd like to create a breeding pair of oscars, ideally two different color forms, starting with 6 young fish and eventually removing the singles- but I've heard that different varieties can be incompatible, that they tend to prefer their own kind. Is this true?

Dino

Not in my experience.

Welcome to the site!!!!

Neville

Having several Oscars will just increase your chances of having a male and a female. If you do try this in a small tank, you'll just end up with poor water conditions that you won't be able to control. so u have to have a huge tank.
Most people obtain a male and female Oscar by sheer luck, as they r monomorphic (u can't tell which one is a male or a female) and then one day, notice lots of little white eggs in their tank. If you've got the room, it's nice to have a breeding pair of Oscars. It's lovely to watch them going through the breeding rituals and then laying their eggs.

different varieties r not incompatible, the only difference is their color, their behavior is all the same, but veiltail oscars r a little sensitive because of their long fins.