科: Gasteropelecidae
银燕子为胸斧鱼科鱼类，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 3–4.4 cm，群体紧密，切忌少于 6 尾，适宜水温 23–27 °C。群要大，光要柔。
Gasteropelecus sternicla is a Gasteropelecidae 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 3–4.4 cm of adult fish at 23–27 °C. In a community tank it pairs well with Small Corydoras.
适合有一定经验的玩家。Gentle, slightly skittish when kept too few；Schools tightly; never keep below 6。
保持 23–27 °C 并避免波动，pH 6–7、GH 5–19 dGH 即可。
成体 3–4.4 cm 左右，因其Middle of the water column的习性，25 L 以上的缸更合适。
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；Schools tightly; never keep below 6。理想混养对象：Small Corydoras — Share the lower water peacefully。需避开Large or predatory fish — Tetras are snacks。
分布于南美洲：Warm freshwater streams and lakes，Still to gentle current。
跳缸风险低，但加缸盖更稳妥。
人工环境下：Egg-scatterer over fine plants; no parental care。Subtle external differences。