Can a tiger Oscar and a red Oscar mate?

They are just colour variants of the same species and pretty much equal. Aggression varies between individual fish - some of them are total bullies and others can become quite tame.

No, Albino Oscars ore white with pale orange designs, and tiger Oscars are black with a kind of orange tiger design on it. I recommend getting a tiger Oscar because often albinos are blind.

Actually, having raised oscars for over 7 years they can reach lengths up to 2 feet. It mainly depends on the aquarium that you have the oscar in. The bigger the aquarium the bigger the fish will...

Oscars eat 5 goldfish & minnows for every 6 inches!!!!!!!!!!!!!!!!!!!!!!!!!!!

A pair of Oscars can mate for life (up to 20 years) if they are not separated somehow. They do tend to slow down as they age though and in my experience loose their fecundity somewhat once they are...