Least Rasbora (Boraras urophthalmoides)

科: Cyprinidae

Least Rasbora（Boraras urophthalmoides）はコイ科に分類される淡水魚で、東南アジアに分布する。成魚は約 3–4.4 cm、適水温 25–28 °C。

飼育条件

水温: 25–28 °C
pH: 5–6.5
GH硬度: 5–12 dGH
成魚の体長: 3–4.4 cm
最小水槽: 25 L
泳ぐ水層: Bottom-dwelling
飼育難度: 中級
性格: Peaceful, restless swimmers that use every inch
原産地: 東南アジア

種の概要

A Cyprinidae species native to Southeast Asia: Boraras urophthalmoides lives bottom-dwelling over gravel. Peaceful, restless swimmers that use every inch. Adults reach 3–4.4 cm. It is one of the aquarium-kept Boraras species we profile, alongside Boraras brigittae, Boraras maculatus, Boraras merah.

原生環境

生息地: Clear streams and rivers over gravel
水流: Moderate, well-oxygenated current
溶存酸素: Appreciates well-oxygenated water

レイアウトと設備

底床: Fine gravel and sand
流木・石組: Water-worn stones and driftwood
水草: Hardy rooted plants along the margins

性格・餌・混泳

群泳性: Groups of 6 minimum; bigger schools calm them
餌: Small surface-oriented omnivore; flakes and tiny live foods
おすすめの混泳相手: Other danios and small rasboras — Form a fast, peaceful upper-water school
混泳しないほうがいい相手: Slow, timid fish — Outcompeted at the surface

繁殖と注意点

雌雄の違い: Males often slimmer and more colourful
繁殖方法: Typical egg-scattering minnow; mop spawning works

よくある質問

Least Rasboraは飼育しやすい？

難易度：中級。Peaceful, restless swimmers that use every inch。

Least Rasboraの適水温と水質は？

適水温 25–28 °C。25.0–28.0 °C typical for the genus。Room temperature to heated, depending on origin。

Least Rasboraの大きさと水槽サイズは？

成魚は約 3–4.4 cm。Bottom-dwelling。最小 25 L の水槽。

Least Rasboraの餌は？

Small surface-oriented omnivore; flakes and tiny live foods。人工飼料に冷凍餌を組み合わせて。

Least Rasboraは混泳できる？

Peaceful, restless swimmers that use every inch；Groups of 6 minimum; bigger schools calm them。向いているのはOther danios and small rasboras — Form a fast, peaceful upper-water school。Slow, timid fish — Outcompeted at the surfaceは不向き。

Least Rasboraの原産地は？

東南アジアのClear streams and rivers over gravelが生息地。

Least Rasboraは飛び出す？

リスクは低いが、ふたがあると安心。

Least Rasboraの繁殖は？

Typical egg-scattering minnow; mop spawning works。Males often slimmer and more colourful。