I've never heard of SAE eating shrimp, but I guess I won't rule it out. Mine are just about full grown. The school of 8 is really amazing...they always stay together. If I stumble across any more at a local petstore I'll be sure to grab some more. I would totally breed them if it was possible. I heard they've never been bred in a home aquarium, but it might be worth trying...well worth it $$$
My SAE got huge from eating all the shrimps in my tank.