スノーボールシュリンプ (Neocaridina zhangjiajiensis)

飼育条件

水温

18–25 °C

pH

6.5–7.5

GH硬度

6–12 dGH

成魚の体長

2–2.5 cm

最小水槽

20 L

泳ぐ水層

Bottom — grazing plants and hardscape

飼育難度

簡単

性格

Extremely peaceful

種の概要

Snowball Shrimp is the milky-white morph of Neocaridina zhangjiajiensis, a close relative of the cherry shrimp named after the sandstone scenery of Zhangjiajie in China's Hunan province, where the wild stock was first collected from cool, well-oxygenated hill streams. Taiwan breeders selected the palest wild individuals until the snowball line bred true — an opaque porcelain white that glows against dark aquasoil and green moss, one of the brightest-looking shrimp in the hobby. It grows slightly larger and stockier than N. davidi at up to 2.5-3 cm, and keeps the family's famous hardiness: 18-26 °C, pH 6.5-7.8, moderate hardness, and an easy-going appetite for algae, biofilm and standard shrimp foods. In the aquarium it is as active and visible as a red cherry and breeds with the same ease in pure freshwater — females carry a conspicuous snow-white clutch visible through the transparent underside. Because it is a different species from the davidi color morphs it will not hybridize with them, so it can share a tank with cherries without diluting either line.

原生環境

生息地

Any stable freshwater community aquarium

水流

Gentle current

溶存酸素

Moderate oxygen

レイアウトと設備

底床

Fine inert gravel or shrimp-safe sand

流木・石組

Java moss and driftwood for grazing

水草

Dense moss and fine-leaf plants

性格・餌・混泳

群泳性

Groups of 10 or more

餌

Algae and biofilm grazer; color foods are unnecessary

おすすめの混泳相手

• Neocaridina davidi color morphs — Different species — no hybrid risk, colors stay pure
• Small peaceful community fish — Adults safe; moss for shrimplets
• Otocinclus catfish — Gentle algae crew companion
• Freshwater snails — Peaceful cleanup partners

混泳しないほうがいい相手

• Copper-based medications — Lethal to all invertebrates
• Large predatory fish — Shrimp are prey
• High-temperature tanks above 27 °C — Shortens lifespan and fades the white

繁殖と注意点

雌雄の違い

Females are noticeably larger and stockier with a deeper, rounded abdomen; males are slim and almost glassy white.

繁殖方法

Breeds readily in pure freshwater. Females carry 20-30 creamy-white eggs for about three weeks; the white clutch shows clearly through the transparent swimmerets — a favorite sight in a mature tank. Hatchlings are miniature adults.

よくある質問