The aquavitro Shrimp Accessories - Cubes are the perfect addition to any aquarium housing various shrimp species. As with many smaller fish species, shrimp require secluded and protected spots in the aquarium as a way to avoid predation from other animals, protect their sensitive exoskeletons after molting and to aid in the breeding cycle. Often, when female shrimp are berried (have eggs) and do not have adequate refuge, the stress will cause them to drop and abandon their eggs.