Calcium + Protein Tablets - Great for Picky Eaters - Snails, Shrimp, Bottom Dwelling Fish, Plecos, Crabs, and More!What animals eat them? neocaridina caridina shrimp all aquatic snails (mystery ramshorn rabbit all!) plecos any fish that loves to steal bottom feeder food! The nutrition tablets are perfect for breeding colonies, and provide ample vitamins and minerals for baby shrimp and snails, as well as full grown adults. Prevents: calcium deprivation (nearly ALL aquarium inverts are calcium deprived) weak, damaged shells no more failed molts prevent premature