Planted Tank Enthusiast
Join Date: Sep 2010
Location: Southern California (LA)
Though Wkndracer puts up some valuable experience and information, reproducing angel fish and cherry shrimp are quite different.
Its perfectly possible to maintain a breeding shrimp population. Cherry shrimplets can hide much better than fry and cherry shrimp breed like roaches (I'm sure angelfish don't). At the same time, your bottom feeders may take advantage of a few shrimplets as they see them but I have heard few stories where they decimate an entire shrimp population.
If you have plenty of hiding places (moderately to heavily planted tank for example), then it's worth a shot.
Otto's don't mix up the substrate really. They'll hang around your tank walls, flora, driftwood and rocks but they don't feed by feeling up the bottom of your tank. Corys are much more likely to do that although few of my fish really disturb my eco-complete substrate. Sand is different though.