安芬虹银汉鱼 · New Guinea Rainbowfish
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Melanotaenia affinis |
| 别名 | 安芬虹銀漢魚 |
| 分类 | 银汉鱼目 Atheriniformes › 黑带银汉鱼科 Melanotaeniidae › Melanotaenia |
| 水体 | 淡水 |
| 成体体长 | 12 cm |
| 饲养难度 | 入门 |
| 最小水体 | 108 L |
| 最小缸长 | 120 cm |
| 群居方式 | 群游 |
| 性情 | 温和 |
| 外部数据 | seriouslyfish melanotaenia-affinis;fishbase 25621 |
| 原产地 | 巴布亚新几内亚 |
| 繁殖方式 | 散卵 |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 20–30 | — | °C |
| pH | 6.5–8 | — | — |
| 总硬度 | 8–20 | — | dGH |
概述
安芬虹银汉鱼（Melanotaenia affinis）是活跃、温和的群居彩虹鱼，有多个产地型。它需要成群和足够泳道，不能只因适应性较强就压缩空间。
分布与栖息地
来自巴布亚新几内亚，可生活在沼泽、水潭、潟湖等环境，最常见于清澈的雨林溪流。鱼群常围绕浓密植物和沉水枝条活动，部分栖地水温、水化学会随季节变化。
饲养环境
底面积至少约 120 × 30 cm。密植区提供遮蔽，另留开阔水域游动，水流保持柔和。
食性与喂食
可接受多数干饲料、冷冻饵和活饵，规律加入适口活饵有助于呈现良好体色。
习性与混养
至少六至八条，更多同伴通常更能减轻紧张并促进雄鱼展示，但必须同步增加空间。与体形相近的温和鱼较合适，它快速游动和相对较大的体形可能干扰小鱼或慢游鱼。
雌雄区分
成熟雄鱼更大、颜色更强，身体较高，第一背鳍和臀鳍延长。
繁殖
为散卵型。调养后选择体况好的亲鱼配对，繁殖缸可不铺底砂，放细叶植物或产卵拖把，用小型气动过滤供氧。近中性水及约 24–26.5 °C 可用于繁殖，轻微升温有时能促产。
可连续数周每天产少量附着卵。成鱼通常不积极吃卵，但每天收取到水质相同的育苗容器较方便。随温度不同约七至十二天孵化，先用微型饵，一周左右逐渐转为微虫或丰年虾无节幼体。
补充说明
常见“标准”型分布较广；“帕格维”型来自塞皮克河的一条支流，“蓝水溪”型只从马当附近一个地点采得。外观差别细微，主要在颜色和花纹，保留来源信息有助于区分。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
Melanotaenia affinis is an active, peaceful rainbowfish represented by several geographic forms. It needs company and adequate swimming room; adaptability is not a reason to restrict housing.
Distribution & habitat
It comes from Papua New Guinea, occupying swamps, pools, and lagoons but most commonly clear rainforest streams. Groups gather near dense plants and submerged branches. Seasonal changes in temperature and chemistry occur in many habitats.
Aquarium setup
Provide a footprint around 120 × 30 cm or larger. Combine planted shelter with unobstructed swimming lanes and gentle circulation.
Diet & feeding
Most dry, frozen, and live foods are accepted. Regular suitable live offerings help maintain coloration.
Behaviour & compatibility
Keep at least six to eight. Larger groups can reduce nervousness and encourage male displays when housing is enlarged accordingly. Similarly sized peaceful companions are more suitable than tiny or slow fishes, which may be disturbed by its activity and size.
Sexual dimorphism
Mature males are larger, brighter, and deeper-bodied, with extended first dorsal and anal fins.
Breeding
This is an egg scatterer. Condition the adults before selecting a well-built pair. Fine plants or spawning mops provide attachment sites in a tank with gentle air-driven filtration; substrate is optional. Near-neutral water around 24–26.5 °C is suitable for breeding, and a modest temperature increase may stimulate spawning.
Small numbers of attached eggs can be laid daily over several weeks. Adults generally do not target them, but daily transfer into matching water simplifies rearing. Depending on temperature, hatching takes approximately seven to twelve days. Begin with microscopic foods, progressing toward microworms or brine-shrimp nauplii after about a week.
Notes
The standard form has a broad range. The Pagwi form comes from a Sepik tributary, while Bluewater Creek fish are known from one locality near Madang. Color and pattern differences are subtle, making retained locality records useful.
来源
- https://www.seriouslyfish.com/species/melanotaenia-affinis(抓取于 2026-10-10)
melanotaenia-affinis · 文件: data/species/melanotaenia-affinis.md · 状态: 草稿