Small shrimp, fish, and other animals naturally seek isolation from time to time to relieve stress and hide from predators. Small shrimp are especially vulnerable when they are shedding their molt, and female shrimp carrying eggs often seek out dark areas to protect themselves and their eggs. Without shelter, it is common for females to abandon their eggs. Aquavitro shrimp enrichment accessories are ideal for providing this type of refuge. In addition, they can serve as a substrate for the development of fine algae and/or biofilms that are considered important food sources for many small shrimp.