ブルーボルトシュリンプ (Caridina cantonensis)

飼育条件

水温

20–26 °C

pH

5.8–6.8

GH硬度

3–8 dGH

成魚の体長

2–2.5 cm

最小水槽

30 L

泳ぐ水層

Bottom — grazing moss and leaf litter

飼育難度

上級

性格

Very peaceful

種の概要

Blue Bolt 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 Blue Bolt Shrimp wears a soft gradient that runs deep sapphire blue over the head into a milky, almost white tail section — prized specimens show a clean band between the two. 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.

原生環境

生息地

Soft, acidic, ultra-stable aquariums

水流

Gentle current

溶存酸素

Moderate oxygen

レイアウトと設備

底床

Active soil that buffers soft acidic water

流木・石組

Java moss and leaf litter over dark substrate

水草

Moss for grazing; avoid fast-melting plants

性格・餌・混泳

群泳性

Groups of 10 or more

餌

Biofilm grazer; specialized bee-shrimp foods

おすすめの混泳相手

• 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

混泳しないほうがいい相手

• 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

繁殖と注意点

雌雄の違い

Females are deeper-bodied with a curved, rounded underbelly and a visible saddle; males are slim, smaller and less intensely colored.

繁殖方法

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.

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