日本杜父鱼 (Cottus pollux)

科: Cottidae

日本杜父鱼为Cottidae鱼类，除争夺藏身处外基本平和，原生分布于日本。底栖栖息者，终日穿梭于岩石、缸壁与洞穴之间，造景决定它的性情。成体约 4–8 cm，成对或小群饲养，需提供充足藏身处，适宜水温 20–26 °C。一鱼一洞，万事大吉。

饲养参数

水温: 20–26 °C
pH: 6.5–7.5
GH 硬度: 5–15 dGH
成体体长: 4–8 cm
最小缸体: 77 L
水层: Middle of the water column
饲养难度: 中等
性情: Peaceful except over a chosen cave
产地: 日本

物种概述

Cottus pollux, a member of the family Cottidae, comes from Japan, where it inhabits warm freshwater streams and lakes. Peaceful except over a chosen cave and predatory bottom-picker; offer varied small fare, it grows to 4–8 cm and adapts well to a properly set-up aquarium in the 20–26 °C range. In a community tank it pairs well with Non-goby bottom fish.

原生生境

栖息地: Warm freshwater streams and lakes
水流: Still to gentle current
溶氧: Moderate oxygen levels

造景与硬件

底床: Fine sand and gravel
硬景观: Driftwood and smooth stones
水草: Hardy common aquarium plants

性格食性与混养

群游性: Pairs or small groups with ample hiding spots
食性: Predatory bottom-picker; offer varied small fare
推荐混养: Non-goby bottom fish — Ignore its territorial posturing
避免混养: Large aggressive fish — Shatter its sense of cover

繁殖与备注

雌雄差异: Subtle external differences
繁殖方式: Lays eggs in a sheltered cavity; males fan and guard

常见问题

日本杜父鱼好养吗？

中等难度，稳定水质比高端设备更关键。Peaceful except over a chosen cave，Pairs or small groups with ample hiding spots。

日本杜父鱼适合什么水温和水质？

水温控制在 20–26 °C，重点是稳定。Stable temperature matching the species origin。

日本杜父鱼能长多大，需要多大的缸？

成体 4–8 cm 左右，因其Middle of the water column的习性，77 L 以上的缸更合适。

日本杜父鱼吃什么？

Predatory bottom-picker; offer varied small fare。建议人工饲料搭配冷冻或活饵，保证多样性。

日本杜父鱼能和其他鱼混养吗？

Peaceful except over a chosen cave；Pairs or small groups with ample hiding spots。理想混养对象：Non-goby bottom fish — Ignore its territorial posturing。需避开Large aggressive fish — Shatter its sense of cover。

日本杜父鱼产自哪里？

原生于日本，栖息于Warm freshwater streams and lakes。Still to gentle current，Moderate oxygen levels。

日本杜父鱼会跳缸吗？

换水与维护期间建议加盖，防止惊跳。

日本杜父鱼怎么繁殖？

人工环境下：Lays eggs in a sheltered cavity; males fan and guard。Subtle external differences。