Glofish are zebra danios. The eggs don't glow, only the fish themselves.
Anyway, while they do breed fairly readily, the way they breed is that they race around literally spraying eggs all over the place. Just about all your fish (any fish, for that matter) will eat eggs if they find them, but the egg scattering method makes them very easy to find, since they're released into the open water just like their regular food.