Eggs get a bad wrap, but in my opinion, they are essential to any fly box! Wild fish around the spawn feed heavily on eggs often honing in on them. Stocked fish are, well, stocked fish! They eat eggs more often than not
And then there’s the weird attractor situations I will never forget fishing to cut throats in MT during August. After fishing through water with naturals I would come back through with a gaudy pale green egg, hot spot, and pink bead(almost identical to the “UV Spearmint.” They would hammer the egg with complete abandon well outside of any spawn I am aware of.
So, fish eat eggs. All of them.