科: Atyidae
ブラッククリスタルシュリンプ（黒ビー）はテナガエビ科 Caridina cantonensis の高級品種改良系で、白地に黒い鞍斑と黒い尾模様の入る黒白縞が特徴です。20～26℃の軟水・酸性（pH5.8～6.8、3～8dGH）、硝酸塩ほぼゼロの安定した水質が必要。淡水で繁殖しますがゆっくりで、経験者向けです。
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.
経験者向き。Very peaceful。Groups of 10 or more。
20–26 °C が目安。急変を避け、Stable 20–26 °C; consistency matters more than the exact number。
成魚は約 2–2.5 cm。Bottom — grazing moss and leaf litter。最小 30 L の水槽。
Biofilm grazer; specialized bee-shrimp foods。Active soil that buffers soft acidic water上で採餌する性質を活かし、沈む餌も与える。
Very peaceful。混泳の相手：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。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は避ける。
Selective-bred form of the Hong Kong hill-stream Caridina原産。Soft, acidic, ultra-stable aquariums、Gentle current。
繁殖：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.。