日本公鱼 (Hypomesus nipponensis)

科: Osmeridae

日本公鱼为公鱼科鱼类，温和的中上层群游鱼，原生分布于日本。成体约 7–12 cm，强群游，建议 10 尾以上，适宜水温 8–20 °C。

饲养参数

水温: 8–20 °C
pH: 6.5–7.5
GH 硬度: 4–12 dGH
成体体长: 7–12 cm
最小缸体: 100 L
水层: Open mid-water
饲养难度: 中等
性情: Peaceful open-water schooler
产地: 日本

物种概述

A Osmeridae species native to Japan: Hypomesus nipponensis lives open mid-water over gravel. Peaceful open-water schooler. Adults reach 7–12 cm. In a community tank it pairs well with Similar-sized peaceful community fish.

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: Strong shoaler; keep in groups of 10 or more
食性: Omnivore; prepared foods with regular vegetable matter
推荐混养: Similar-sized peaceful community fish — Similar size and water needs
避免混养: Much smaller fish — May outcompete or bully tiny tankmates

繁殖与备注

雌雄差异: Males often slimmer and more colourful
繁殖方式: Egg-scatterer; no parental care

常见问题

日本公鱼好养吗？

饲养难度：中等。Peaceful open-water schooler。

日本公鱼适合什么水温和水质？

水温控制在 8–20 °C，重点是稳定。Unheated for temperate species。

日本公鱼能长多大，需要多大的缸？

成体约 7–12 cm；最小缸体 100 L，并留出活动空间。

日本公鱼吃什么？

Omnivore; prepared foods with regular vegetable matter。每天两小餐比一顿大餐更利于状态。

日本公鱼能和其他鱼混养吗？

Peaceful open-water schooler；Strong shoaler; keep in groups of 10 or more。理想混养对象：Similar-sized peaceful community fish — Similar size and water needs。需避开Much smaller fish — May outcompete or bully tiny tankmates。

日本公鱼产自哪里？

原生于日本，栖息于Clear streams and rivers over gravel。Moderate, well-oxygenated current，Appreciates well-oxygenated water。

日本公鱼会跳缸吗？

无明显跳缸倾向，常规缸盖即可。

日本公鱼怎么繁殖？

Egg-scatterer; no parental care。Males often slimmer and more colourful。