科: Gasteropelecidae
阴阳燕子为胸斧鱼科鱼类，和平但胆小，裸缸强光下易紧张，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 2.6–3.9 cm，群游性，8–10 尾以上体色与状态最佳，适宜水温 24–28 °C。群要大，光要柔。
Carnegiella strigata, a member of the family Gasteropelecidae, comes from South America, where it inhabits warm freshwater streams and lakes. Peaceful but shy in bare or bright tanks and unfussy; a varied small diet preserves colour, it grows to 2.6–3.9 cm and adapts well to a properly set-up aquarium in the 24–28 °C range. In a community tank it pairs well with Other small peaceful tetras and rasboras.
中等难度，稳定水质比高端设备更关键。Peaceful but shy in bare or bright tanks，Shoaling; 8–10+ unlocks full colour and calm。
保持 24–28 °C 并避免波动，pH 5–8、GH 5–19 dGH 即可。
成体 2.6–3.9 cm 左右，因其Middle of the water column的习性，25 L 以上的缸更合适。
Unfussy; a varied small diet preserves colour。每天两小餐比一顿大餐更利于状态。
Peaceful but shy in bare or bright tanks。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。
人工环境下：Scatters eggs among plants; light-proof the setup or add mops。Subtle external differences。