do algea eaters eat any thing else

That's a good question. I'm not exactly sure of the answer. You might have to be more specific about which algae eaters you are talking about.

I'm thinking I've seem many types of algae eaters also consume fish food flakes, but I don't know if that's true for all species.

WELL THERE LONG AND THIN ONE IS PINKY-ORANGE AND THE OTHER IS PALE YELLOW WITH THREE WHITE SPOTS ACROSS HIS BACK
I HAVE NOT SEEN THEM EAT ANY THING I HOPE THEY WILL BE OKAY