直口鲮 (Rectoris posehensis)

科: Cyprinidae

直口鲮为鲤科鱼类，温和，宜与体型相近的和平鱼混养，原生分布于中国长江上游。适应性强的物种，对新手错误较为宽容。成体约 17.2–25.3 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。

饲养参数

水温: 18–26 °C
pH: 6.5–7.5
GH 硬度: 5–15 dGH
成体体长: 17.2–25.3 cm
最小缸体: 500 L
水层: Bottom-dwelling
饲养难度: 中等
性情: Peaceful; keep with similar-sized calm tankmates
产地: 中国长江上游

物种概述

Rectoris posehensis, a member of the family Cyprinidae, comes from upper Yangtze, China, where it inhabits clear streams and rivers over gravel. Peaceful; keep with similar-sized calm tankmates and omnivore; prepared foods with regular variety, it grows to 17.2–25.3 cm and adapts well to a properly set-up aquarium in the 18–26 °C range. Other Rectoris species in our database include Rectoris luxiensis, Rectoris mutabilis, Rectoris longibarbus.

原生生境

栖息地: Clear streams and rivers over gravel
水流: Moderate, well-oxygenated current
溶氧: Appreciates well-oxygenated water

造景与硬件

底床: Fine gravel and sand
硬景观: Water-worn stones and driftwood
水草: Hardy rooted plants along the margins

性格食性与混养

群游性: Keep in a group of 4–6 for natural behaviour
食性: Omnivore; prepared foods with regular variety
推荐混养: Similar-sized peaceful community fish — Compatible size and temperament
避免混养: Fin-nippers — Constant stress

繁殖与备注

雌雄差异: Males often slimmer and more colourful
繁殖方式: Breeding is straightforward scatter-spawning

常见问题

直口鲮好养吗？

饲养难度：中等。Peaceful; keep with similar-sized calm tankmates。

直口鲮适合什么水温和水质？

保持 18–26 °C 并避免波动，pH 6.5–7.5、GH 5–15 dGH 即可。

直口鲮能长多大，需要多大的缸？

成体约 17.2–25.3 cm，属Bottom-dwelling鱼类，建议至少 500 L 缸体。

直口鲮吃什么？

Omnivore; prepared foods with regular variety。它在Fine gravel and sand上自然觅食，投喂可少量多次。

直口鲮能和其他鱼混养吗？

可以。Peaceful; keep with similar-sized calm tankmates，适合与Similar-sized peaceful community fish — Compatible size and temperament混养。避开Fin-nippers — Constant stress。

直口鲮产自哪里？

分布于中国长江上游：Clear streams and rivers over gravel，Moderate, well-oxygenated current。

直口鲮会跳缸吗？

换水与维护期间建议加盖，防止惊跳。

直口鲮怎么繁殖？

Breeding is straightforward scatter-spawning。Males often slimmer and more colourful。