科: Cyprinodontidae
美国旗鱼为鳉科鱼类，和平、 hardy、不停生小鱼，原生分布于中北美洲。皮实多产，水草茂密时繁殖自成体系。成体约 4.9–7.2 cm，雌雄比例 1:2 或 1:3，减轻雌鱼压力，适宜水温 18–22 °C。会一直生小鱼，请有心理准备。
Jordanella floridae, a member of the family Cyprinodontidae, 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 4.9–7.2 cm. One male to two or three females spreads the attention. Keep water hard and alkaline, plant densely, and expect fry — forever. Maintain 18–22 °C at pH 6.5–7.5. A rewarding species for the aquarist who reads before buying.