科: Callichthyidae
茱莉鼠为美鲶科鱼类，夜行性居多，白天安静潜伏，原生分布于南美洲。夜行底栖者，灯灭之后才是它一天的开始。成体约 3.9–5.7 cm，小型种可成对，大型种单养，适宜水温 23–26 °C。沉底饲料，关灯后再喂。
A Callichthyidae species native to South America: Corydoras julii lives bottom-dwelling over sand. Peaceful; most activity happens after dark. Adults reach 3.9–5.7 cm. It is one of the aquarium-kept Corydoras species we profile, alongside Corydoras aeneus, Corydoras paleatus, Corydoras panda.
中等难度，稳定水质比高端设备更关键。Peaceful; most activity happens after dark，Keep bottom stock light — they share one floor。
水温控制在 23–26 °C，重点是稳定。Stable tropical range。
成体 3.9–5.7 cm 左右，因其Bottom-dwelling的习性，39 L 以上的缸更合适。
Omnivorous scavenger — sinking pellets, frozen and vegetable foods。它在Fine sand上自然觅食，投喂可少量多次。
Peaceful; most activity happens after dark；Keep bottom stock light — they share one floor。理想混养对象：Other similar-sized bottom fish — Share the floor peaceably。需避开Tiny fish that fit in its mouth — Vanish at night。
产地为南美洲，典型栖息地是Slow streams over sand，对溶氧要求一般。
Spawning rarely seen; presumed crevice egg-layer。Females rounder。