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''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).〔http://www.plantedtank.net/forums/showthread.php?t=159785〕 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 long. They prefer clean water, with a pH of 6.5-8, and a temperature of They are most comfortable at . Cherry shrimp are omnivores that may live 1–2 years. These shrimp have previously been classified as ''Neocaridina heteropoda'' and ''Neocaridina denticulata sinensis'', however are now known as ''Neocaridina davidi'' which is based on the oldest known published description of the species. == Housing == Red cherry shrimp are easy to care for in the home freshwater aquarium and breed well. They will adapt to a wide range of water conditions, and will thrive in the same conditions as many common aquarium fish. Neutral to slightly alkaline pH, with low nitrates and nitrites, gives best results. A cooling system is recommended in warm climates. A few cherry shrimp can be kept in a desktop aquarium of capacity, and a setup of or more will allow for an active colony. A planted tank is most comfortable for the shrimp and the plants provide cover for adults and young. The shrimp spends a great deal of its time sitting on aquatic plants, when available, and hiding in them for protection, especially after molting. They also eat the film of algae and microorganisms that forms on plant leaves without harming the leaves in the process. Java moss and Java fern are both excellent plants for the shrimp tank, as they thrive in the same conditions as the cherry shrimp and provide both the physical benefits of the plants to the shrimp and provide a human viewer with a pleasing visual contrast with the red bodies of the shrimp. Shrimplets spend much of their early life hiding among plants and feeding from microorganisms and tank algae. Java moss is common and inexpensive in most places, fast-growing, and provides excellent cover for the young. 〔http://aquariumsandfishes.com/451/red-cherry-shrimp/〕 Red cherry shrimp respond to the colour of their background and substrate. If they are kept in a tank with light-coloured substrate, they will become paler, or even transparent. On a darker substrate, they take on their full red colouration. Colour intensity also depends on the types of food available (live foods and those high in protein and fats are more beneficial than flake foods), water pH, and temperature. Prepared foods specifically designed for shrimp are available at some suppliers. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cherry shrimp」の詳細全文を読む スポンサード リンク
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