Dwarf Top Minnow (Heterandria formosa)

飼育条件

水温

20–26 °C

pH

7–8

GH硬度

9–19 dGH

成魚の体長

2.7–4 cm

最小水槽

25 L

泳ぐ水層

Middle of the water column

飼育難度

中級

性格

Easy-going community fish with lively breeding

原産地

中北美洲

種の概要

Heterandria formosa, a member of the family Poeciliidae, is native to 中北美洲. An unkillable beginner classic that nonetheless shows its best in hard, alkaline, well-planted water. It swims in mid-water. Adults reach 2.7–4 cm. Loose colonies; heavy planting shelters the fry. Keep water hard and alkaline, plant densely, and expect fry — forever. Maintain 20–26 °C at pH 7–8. A solid choice for a well-planned community tank.

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

Loose colonies; heavy planting shelters the fry

餌

Unfussy — quality flakes, some greens, occasional treats

おすすめの混泳相手

• Corydoras catfish — Share the bottom peacefully

混泳しないほうがいい相手

• Large predators — The fry buffet ends everything

繁殖と注意点

雌雄の違い

Subtle external differences

繁殖方法

Livebearer — females deliver 20–100 fry every few weeks