Dwarf Rainbowfish (Melanotaenia praecox)

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

中北美洲

種の概要

Melanotaeniidae species Melanotaenia praecox comes from 中北美洲. A schooling fish of open, sunlit water whose colours arrive with maturity, not in the shop tank. It swims in mid-water. Adults reach 6.8–9.9 cm. Groups of 6–8 minimum; larger schools calm them. Long tank, big group, steady water changes — colour follows within months. Maintain 27–30 °C at pH 7–8. Best suited to a keeper who can match its natural water.

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