科: Characidae
X光灯为脂鲤科鱼类，性情温和，数量过少会神经质，原生分布于南美洲。体色是诚实的状态信号：发色差、分散就是在告诉你哪里不对。成体约 3.4–5 cm，群体紧密，切忌少于 6 尾，适宜水温 24–28 °C。群要大，光要柔。
A Characidae species native to South America: Pristella maxillaris lives middle of the water column over blackwater streams and flooded forest. Gentle, slightly skittish when kept too few. Adults reach 3.4–5 cm. In a community tank it pairs well with Small Corydoras.
中等难度，稳定水质比高端设备更关键。Gentle, slightly skittish when kept too few，Schools tightly; never keep below 6。
水温控制在 24–28 °C，重点是稳定。Heater for stable tropical warmth。
成体约 3.4–5 cm，属Middle of the water column鱼类，建议至少 30 L 缸体。
Mid-water omnivore; colour foods keep the red honest。它在Dark sand and leaf litter上自然觅食，投喂可少量多次。
Gentle, slightly skittish when kept too few。推荐混养：Small Corydoras — Share the lower water peacefully。避免与Large or predatory fish — Tetras are snacks同缸。
原生于南美洲，栖息于Blackwater streams and flooded forest。Still to gentle current，Moderate。
换水与维护期间建议加盖，防止惊跳。
人工环境下：Egg-scatterer over fine plants; no parental care。Subtle; females fuller-bodied。