科: Poeciliidae
月光鱼为花鳉科鱼类，温和，雄鱼追逐频繁，需为雌鱼提供躲避，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 3–4.4 cm，建议 6 尾以上小群，雌多雄少，适宜水温 18–25 °C。会一直生小鱼，请有心理准备。
A Poeciliidae species native to Central America: Xiphophorus maculatus lives bottom-dwelling over warm freshwater streams and lakes. Peaceful; males chase persistently, give females cover. Adults reach 3–4.4 cm. It is one of the aquarium-kept Xiphophorus species we profile, alongside Xiphophorus hellerii, Xiphophorus variatus.
中等难度，稳定水质比高端设备更关键。Peaceful; males chase persistently, give females cover，Groups of 6+; more females than males。
水温控制在 18–25 °C，重点是稳定。Stable temperature matching the species origin。
成体约 3–4.4 cm；最小缸体 25 L，并留出活动空间。
Omnivore; flakes plus vegetable matter and small live foods。每天两小餐比一顿大餐更利于状态。
可以。Peaceful; males chase persistently, give females cover，适合与Corydoras catfish — Share the bottom peacefully混养。避开Large predators — The fry buffet ends everything。
分布于中北美洲：Warm freshwater streams and lakes，Still to gentle current。
跳缸风险低，但加缸盖更稳妥。
Continuous breeder in warm, hard, alkaline water。Subtle external differences。