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。
Corydoras julii, a member of the family Callichthyidae, is native to 南美洲. Its barbels read the sand like fingers; coarse gravel slowly wears them down. It lives on the bottom. Adults reach 3.9–5.7 cm. Keep bottom stock light — they share one floor. Provide soft substrate, hiding tubes, and food that reaches the bottom before tankmates finish it. Maintain 23–26 °C at pH 6–8. Best suited to a keeper who can match its natural water.