I put glass shrimp in my terrapin tank... to feed the terrapin (I think it eats the shrimp, never seen it do it) whenever i throw in turtle pellets, the shrimp grab on to to the pellets and hugs it while chewing on it like an edible bolster. Sometimes i think they could do that with baby fishes too. Not sure.

Shrimps almost definitely eat hair algae. My terrapin tank is clear of algae, except some on the glass.

By the way, do Siamese Algae Eaters or cories eat baby fish?