科: Cyprinidae
窄口白甲鱼为鲤科鱼类，温和，宜与体型相近的和平鱼混养，原生分布于中国南方山溪河流。性情平和、食性杂，是混养缸里最省心的居民之一。成体约 23.7–34.8 cm，4–6 尾可观察自然行为，适宜水温 18–26 °C。稳水、换水、杂食，足矣。
Onychostoma angustistomata is a Cyprinidae from southern Chinese mountain streams. In the wild it prefers clear streams and rivers over gravel; in the aquarium it stays peaceful. Plan on 23.7–34.8 cm of adult fish at 18–26 °C. Related profiles: Onychostoma barbatulum, Onychostoma elongatum, Onychostoma gerlachi.
中等难度，稳定水质比高端设备更关键。Peaceful; keep with similar-sized calm tankmates，Keep in a group of 4–6 for natural behaviour。
保持 18–26 °C 并避免波动，pH 6.5–7.5、GH 5–15 dGH 即可。
成体约 23.7–34.8 cm，属Active throughout the water column鱼类，建议至少 500 L 缸体。
Omnivore; prepared foods with regular variety。建议人工饲料搭配冷冻或活饵，保证多样性。
可以。Peaceful; keep with similar-sized calm tankmates，适合与Robust schooling cyprinids — Add activity without conflict混养。避开Much larger predators — Risk at night。
分布于中国南方山溪河流：Clear streams and rivers over gravel，Moderate, well-oxygenated current。
跳缸风险低，但加缸盖更稳妥。
Breeding is straightforward scatter-spawning。Males often slimmer and more colourful。