科: Atyidae
黑水晶虾是匙虾科 Caridina cantonensis 的高阶选育品系，特征为黑白相间条纹（白底三道浓黑鞍斑配黑尾饰）。需要软酸水质：20–26 °C，pH 5.8–6.8，3–8 dGH，亚硝酸盐趋近于零；可淡水繁殖但速度慢，适合专注养虾的玩家。
Black Crystal Shrimp is a high-grade selective-bred morph of Caridina cantonensis, the Hong Kong hill-stream atyid whose famous red-and-white 'Crystal Red' form revolutionized the shrimp hobby after Japanese breeder Hisaaki Suzuki stabilized it in 1996 from bee shrimp × tiger shrimp hybrids. The Black Crystal Shrimp wears a black and white banded pattern — a white body with three bold black saddles and black tail accents, the photographic negative of the famous Crystal Red. Like every cantonensis-line shrimp it demands soft, acidic, ultra-stable water: 20-26 °C, pH 5.8-6.8 and 3-8 dGH, ideally over active soil that buffers the chemistry, with nitrate kept near zero through gentle filtration and small, regular water changes. It grows to 2-2.5 cm, grazes biofilm and specialized bee-shrimp foods, and breeds in freshwater — but slowly and sensitively: the female carries only 20-30 eggs, larvae are smaller and slower than neocaridinas, and swings in parameters trigger molting failures. This is a connoisseur's shrimp — dazzling in a dark, mossy tank, but happiest with a keeper who measures rather than guesses.
只适合资深玩家。Very peaceful；Groups of 10 or more。
水温控制在 20–26 °C，重点是稳定。Stable 20–26 °C; consistency matters more than the exact number。
成体约 2–2.5 cm，属Bottom — grazing moss and leaf litter鱼类，建议至少 30 L 缸体。
Biofilm grazer; specialized bee-shrimp foods。它在Active soil that buffers soft acidic water上自然觅食，投喂可少量多次。
Very peaceful。推荐混养：Other soft-water Caridina morphs — Same chemistry; interbreed — keep lines separate, Otocinclus catfish — Safe, gentle, same soft water, Taiwan bee / shadow bee lines — Close relatives with identical needs。避免与Neocaridina (cherry-type) shrimp — Different water chemistry; one side will suffer, Copper-based medications — Lethal to all invertebrates, Large or boisterous fish — Stress and predation; shrimp need calm同缸。
分布于Selective-bred form of the Hong Kong hill-stream Caridina：Soft, acidic, ultra-stable aquariums，Gentle current。
人工环境下：Breeds in freshwater but slowly and sensitively. After mating the female carries 20-30 eggs for about four weeks; hatchlings are tiny and appreciate powdered food and mature biofilm. Stable parameters matter more than any single number — swings cause failed molts.。Females are deeper-bodied with a curved, rounded underbelly and a visible saddle; males are slim, smaller and less intensely colored.。