Aquatic Arts 10 Bloody Mary Shrimp (Neocaridina davidi) - Breeding Age Young Adults at 1/2 to 1 Inch Long All Aquatic Arts (formerly InvertObsession) brand plants and animals come with a 100% live arrival guarantee, plus free email support directly from the owners! The Bloody Mary Shrimp boasts the deepest red coloration of all Red Cherry Shrimp! These ship out as breeding age young adults that range from 1/2 to 1 inch in length. Dwarf shrimp are very small and are not ideal for aquariums with medium to large-sized fish. Please research dwarf shrimp before purchasing to ensure compatibility with your tank's inhabitants. A colony of shrimp works as a very effective cleaning crew for your tanks, cleaning up algae and waste!