科: Lebiasinidae
铅笔鱼为鳉脂鲤科鱼类，性情温和，数量过少会神经质，原生分布于南美洲。中上层群游鱼，体色与胆量随群体一起到来。成体约 3.8–5.5 cm，群体紧密，切忌少于 6 尾，适宜水温 23–28 °C。群要大，光要柔。
Nannostomus eques is a Lebiasinidae from South America. In the wild it prefers warm freshwater streams and lakes; in the aquarium it stays gentle, slightly skittish when kept too few. Plan on 3.8–5.5 cm of adult fish at 23–28 °C. Related profiles: Nannostomus beckfordi, Nannostomus harrisoni, Nannostomus marginatus.
饲养难度：中等。Gentle, slightly skittish when kept too few。
建议水温 23–28 °C，23–28 °C recorded range；Stable temperature matching the species origin。
成体约 3.8–5.5 cm，属Bottom-dwelling鱼类，建议至少 36 L 缸体。
Mid-water omnivore; colour foods keep the red honest。每天两小餐比一顿大餐更利于状态。
Gentle, slightly skittish when kept too few。推荐混养：Other small peaceful tetras and rasboras — Form a mixed, calm mid-water mass。避免与Single-species isolation — A lone tetra is a stressed tetra同缸。
分布于南美洲：Warm freshwater streams and lakes，Still to gentle current。
无明显跳缸倾向，常规缸盖即可。
Egg-scatterer over fine plants; no parental care。Subtle external differences。