Today I watched a Lemon Tetra try to get a food pellet from a RCS. The shrimp held onto the food while snapping his other pincer at the fish. The fish was twice as long as the shrimp but the shrimp won.
My RCS eat side by side with my Corys and have been seen on my plecs back (until he swatted them off).
Sometimes you just have to take the risk and see the outcome.
Sent from my iPhone using Aquarium Advice