I have two Peppermints and a Skunk Cleaner in my 40B. I don't see any problems. Not sure if the smaller area of the 5g would change that though.
Mixing shrimp depends on the type really. For instance, Coral Banded seem closer to lobsters really then shrimp temperament-wise. They can be downright aggressive sometimes. Peppermints and Skunks aren't too aggressive though (unless they see a coral getting a meal...).
Mixing shrimp depends on the type really. For instance, Coral Banded seem closer to lobsters really then shrimp temperament-wise. They can be downright aggressive sometimes. Peppermints and Skunks aren't too aggressive though (unless they see a coral getting a meal...).