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.
原生生境
栖息地
Warm freshwater streams and lakes
水流
Still to gentle current
溶氧
Moderate oxygen levels
造景与硬件
底床
Fine sand and gravel
硬景观
Driftwood and smooth stones
水草
Hardy common aquarium plants
性格食性与混养
群游性
Loose colonies; heavy planting shelters the fry
食性
Unfussy — quality flakes, some greens, occasional treats
推荐混养
Corydoras catfish — Share the bottom peacefully
避免混养
Large predators — The fry buffet ends everything
繁殖与备注
雌雄差异
Subtle external differences
繁殖方式
Livebearer — females deliver 20–100 fry every few weeks