丝鳍彩虹鱼 (Iriatherina werneri)

饲养参数

水温

26–30 °C

pH

6–8

GH 硬度

5–12 dGH

成体体长

3–4.4 cm

最小缸体

25 L

水层

Bottom-dwelling

饲养难度

中等

性情

Peaceful schooling fish; males shimmer and spar gently

产地

大洋洲（澳大利亚北部及新几内亚）

物种概述

Iriatherina werneri is a Melanotaeniidae from N Australia & New Guinea. Its iridescence is honest signalling: colour and condition track water quality and age together. It lives on the bottom. Adults reach 3–4.4 cm. Groups of 6–8 minimum; larger schools calm them. Provide swimming length, clean hard water and a big school; patience does the rest. Maintain 26–30 °C at pH 6–8. A solid choice for a well-planned community tank.

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

Groups of 6–8 minimum; larger schools calm them

食性

Omnivore; quality flakes plus vegetable matter

推荐混养

• Robust peaceful cyprinids — Add motion without menace

避免混养

• Small timid fish — Outcompeted at feeding time

繁殖与备注

雌雄差异

Subtle external differences

繁殖方式

Prolific egg-scatterer when kept hard and alkaline