Dwarf Rainbowfish (Melanotaenia praecox)

科: Melanotaeniidae

Dwarf Rainbowfish（Melanotaenia praecox）は虹银汉鱼科に分類される淡水魚で、ニューギニアに分布する。成魚は約 6.8–9.9 cm、適水温 27–30 °C。

飼育条件

水温
27–30 °C
pH
7–8
GH硬度
9–19 dGH
成魚の体長
6.8–9.9 cm
最小水槽
118 L
泳ぐ水層
Middle of the water column
飼育難度
中級
性格
Peaceful schooling fish; males shimmer and spar gently
原産地
ニューギニア

種の概要

A Melanotaeniidae species native to N Australia & New Guinea: Melanotaenia praecox lives middle of the water column over warm freshwater streams and lakes. Peaceful schooling fish; males shimmer and spar gently. Adults reach 6.8–9.9 cm. It is one of the aquarium-kept Melanotaenia species we profile, alongside Melanotaenia boesemani.

原生環境

生息地
Warm freshwater streams and lakes
水流
Still to gentle current
溶存酸素
Moderate oxygen levels

レイアウトと設備

底床
Fine sand and gravel
流木・石組
Driftwood and smooth stones
水草
Hardy common aquarium plants

性格・餌・混泳

群泳性
Groups of 6–8 minimum; larger schools calm them
餌
Omnivore; quality flakes plus vegetable matter
おすすめの混泳相手
  • Other rainbowfish and large peaceful tetras — Share the open mid-water
混泳しないほうがいい相手
  • Boisterous cichlids — Stress and fin damage

繁殖と注意点

雌雄の違い
Subtle external differences
繁殖方法
Prolific egg-scatterer when kept hard and alkaline

よくある質問

Dwarf Rainbowfishは飼育しやすい？

中級向き。水質の安定が重要。Peaceful schooling fish; males shimmer and spar gently。Groups of 6–8 minimum; larger schools calm them。

Dwarf Rainbowfishの適水温と水質は？

27–30 °C が目安。急変を避け、Stable temperature matching the species origin。

Dwarf Rainbowfishの大きさと水槽サイズは？

成魚は 6.8–9.9 cm。最低 118 L。

Dwarf Rainbowfishの餌は？

Omnivore; quality flakes plus vegetable matter。1日2回の少量給餌が理想的。

Dwarf Rainbowfishは混泳できる？

Peaceful schooling fish; males shimmer and spar gently；Groups of 6–8 minimum; larger schools calm them。向いているのはOther rainbowfish and large peaceful tetras — Share the open mid-water。Boisterous cichlids — Stress and fin damageは不向き。

Dwarf Rainbowfishの原産地は？

ニューギニアのWarm freshwater streams and lakesが生息地。

Dwarf Rainbowfishは飛び出す？

飛び出しの傾向は低い。標準のふたでOK。

Dwarf Rainbowfishの繁殖は？

Prolific egg-scatterer when kept hard and alkaline。Subtle external differences。