Hope all are doing Great in the fish world. Do Oscars really eat

when they were small they would eat every thing an want more,no mess. Now that they are bigger , 6" an 4" you feed them an it goes in there mouth an right out their gills all broke up. An that fast too.Non stop !! whats up with that ?? They can't be swollowing any of it. Like I said before they did'nt do that , why now

One is I guess, a tiger Oscar (has the orange markings on it ) an the smaller one is a albino, I guess ( all white with a little orange markings on it down low ). Why do they look different, I mean their heads are not the same shape.Is one not a true blue Oscar, or are these albinos just shaped differently ( the head ) The rest of it looks the same...
Thanks Shopdave52