グリーンジェードシュリンプ (Neocaridina davidi)

科: Atyidae

グリーンジェイドシュリンプは2000年代後半の台湾の系統から生まれた Neocaridina davidi の深い翡翠色系統。体長約2～2.5cm、18～26℃で丈夫で純淡水で繁殖します。

飼育条件

水温: 18–26 °C
pH: 6.5–8
GH硬度: 6–15 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

Green Jade Shrimp is the jade-green selection of Neocaridina davidi that emerged from Taiwanese breeding programs in the late 2000s, when breeders crossing yellow and wild-type lines noticed deep green sports and stabilized them into a true-breeding strain. Good green jades are a striking deep jade — almost emerald on the back, fading to a lighter mint on the underside — and unlike some color forms the green stays rich in adulthood. It is the same forgiving species underneath: 2-2.5 cm, comfortable at 18-26 °C across pH 6.5-8.0, unfussy about hardness, and constantly at work scraping algae from leaves, wood and glass. Green jade is among the best 'working' shrimp for a planted tank because its color reads beautifully against both green moss and red plants, and its transparent undertone gives it an almost metallic glow under good lighting. It breeds as easily as the red cherry — freshwater, no larval stage, monthly clutches — and tolerates the beginner mistakes that kill more delicate Caridina. Keep colors apart, avoid copper, and it will multiply for years.

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 keep hues intense
おすすめの混泳相手: Other Neocaridina davidi morphs — Interbreed — single-color colonies only
Small tetras and rasboras — Safe for adults; moss shelters shrimplets
Otocinclus catfish — Peaceful, same water, same job
Freshwater snails — No conflict; shared cleanup role
混泳しないほうがいい相手: Copper-based medications — Lethal to all invertebrates
Large predatory fish — Will eat shrimp
Plant fertilizers with trace copper — Copper accumulates and harms colonies

繁殖と注意点

雌雄の違い: Females are larger and deeper with a darker green saddle; males slimmer and paler mint.
繁殖方法: Breeds readily in pure freshwater. Females carry 15-25 eggs for roughly three weeks; hatchlings are fully formed and graze biofilm immediately. Monthly clutches are the norm in a mature tank.

よくある質問

グリーンジェードシュリンプは飼育しやすい？

難易度：簡単。Extremely peaceful。

グリーンジェードシュリンプの適水温と水質は？

適水温 18–26 °C。18–26 °C stable range。Stable 18–26 °C; very tolerant of water chemistry。

グリーンジェードシュリンプの大きさと水槽サイズは？

成魚 2–2.5 cm 前後。Bottom — grazing plants and hardscapeのため 20 L 以上の水槽を推奨。

グリーンジェードシュリンプの餌は？

Algae and biofilm grazer; color foods keep hues intense。1日2回の少量給餌が理想的。

グリーンジェードシュリンプは混泳できる？

Extremely peaceful；Groups of 10 or more。向いているのはOther Neocaridina davidi morphs — Interbreed — single-color colonies only, Small tetras and rasboras — Safe for adults; moss shelters shrimplets, Otocinclus catfish — Peaceful, same water, same job。Copper-based medications — Lethal to all invertebrates, Large predatory fish — Will eat shrimp, Plant fertilizers with trace copper — Copper accumulates and harms coloniesは不向き。

グリーンジェードシュリンプの原産地は？

Selective-bred form of the East Asian NeocaridinaのAny stable freshwater community aquariumが生息地。

グリーンジェードシュリンプの繁殖は？

Breeds readily in pure freshwater. Females carry 15-25 eggs for roughly three weeks; hatchlings are fully formed and graze biofilm immediately. Monthly clutches are the norm in a mature tank.。Females are larger and deeper with a darker green saddle; males slimmer and paler mint.。