科: Poeciliidae
杂色剑尾为花鳉科鱼类，皮实的群居鱼，繁殖力旺盛，原生分布于南美洲。hardy 的经典入门鱼，在偏硬偏碱的水质里状态最佳。成体约 5.2–7.7 cm，密集水草能为幼鱼提供庇护，适宜水温 15–25 °C。会一直生小鱼，请有心理准备。
Xiphophorus variatus, a member of the family Poeciliidae, comes from Central and North America and Mexico, where it inhabits warm freshwater streams and lakes. Easy-going community fish with lively breeding and unfussy — quality flakes, some greens, occasional treats, it grows to 5.2–7.7 cm and adapts well to a properly set-up aquarium in the 15–25 °C range. Other Xiphophorus species in our database include Xiphophorus hellerii, Xiphophorus maculatus.
适合有一定经验的玩家。Easy-going community fish with lively breeding；Loose colonies; heavy planting shelters the fry。
保持 15–25 °C 并避免波动，pH 7–8、GH 9–19 dGH 即可。
成体 5.2–7.7 cm 左右，因其Bottom-dwelling的习性，71 L 以上的缸更合适。
Unfussy — quality flakes, some greens, occasional treats。它在Fine sand and gravel上自然觅食，投喂可少量多次。
Easy-going community fish with lively breeding；Loose colonies; heavy planting shelters the fry。理想混养对象：Other peaceful community fish — Ignore the endless fry。需避开Fin-nippers — Constant harassment exhausts females。
产地为中北美洲（墨西哥），典型栖息地是Warm freshwater streams and lakes，对溶氧要求一般。
无明显跳缸倾向，常规缸盖即可。
人工环境下：Livebearer — females deliver 20–100 fry every few weeks。Subtle external differences。