Neocaridina davidi var. red or cherry shrimp is a variety of freshwater shrimp from Taiwan which is commonly kept in aquariums. The natural colouration of the shrimp is green-brown, however the red morph is more frequently sold. The density of coloration on adult shrimp, dependent on breeding, determines their sale price and "quality" (grading). This "quality" is purely aesthetic, as the size, behavior and other characteristics of the animal is more or less equal across varieties. Full-grown cherry shrimp reach about 4 centimetres (1.6 in) long. They prefer clean water, with a pH of 6.5-8, and a temperature of 14–29 °C (57–84 °F) They are most comfortable at 22 °C (72 °F). Cherry shrimp are omnivores that may live 1–2 years. These shrimp have previously been classified as Neocaridina heter