This listing is for Purple Black Mystery Snails. They will be pea size toadultsize Common Name: Purple Black Mystery SnailLatin Name:Pomacea bridgesiiOrigin: Originally found throughout the Amazon river basin, now widespread throughout the hobby.Mystery snails are often sold under the name Golden Apple snail. This beneficial snail consumes excess algae and detritus. The apple snails are popular aquarium-pets because of their attractive appearance and size. Take all types of life & frozen food, pellets and flakes. NameMystery Snails Scientific namePomacea Brigesii / Pomacea Diffusa Tank size (minimal)5-gallons (~20 liters) KeepingEasy BreedingEasy Size4.5 6.5 cm (1.7 2.5 inches) Temperature20 to 28 C(~68F 84F) Optimal PH7 8 Optimal GH7 18 Optimal KH8(3 -18) TDS (optimal)100-250 (100-400) NitrateLess than 20 ppm DietAlgae eater/omnivore TemperamentPeaceful and solitary Life span1 3 years Orders are shipped out Monday -Wednesday Photo is not an actual photograph of the item you will be receiving, it is just a representation. All fish and invertebrates are 100% guaranteed to arrive alive, happy, and healthy In the rare event of a DOA, please send us a clear photo of the DOA fish still in the bag within 2 hours of FedEx showing the package has been delivered All sizes listed are approximate Buyer is responsible to know and follow all of their State/County laws