电光美人 · Neon Dwarf Rainbowfish
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Melanotaenia praecox |
| 别名 | 薄唇虹銀漢魚、薄唇虹银汉鱼 |
| 分类 | 银汉鱼目 Atheriniformes › 黑带银汉鱼科 Melanotaeniidae › Melanotaenia |
| 水体 | 淡水 |
| 成体体长 | 8 cm |
| 饲养难度 | 入门 |
| 最小水体 | 54 L |
| 最小缸长 | 60 cm |
| 群居方式 | 群游 |
| 性情 | 温和 |
| 外部数据 | seriouslyfish melanotaenia-praecox;fishbase 10516 |
| 原产地 | 印度尼西亚新几内亚岛曼伯拉莫河水系 |
| 食性 | 杂食 |
| 繁殖方式 | 散卵 |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 23–28 | — | °C |
| pH | 6.8–7.5 | — | — |
| 总硬度 | 5–15 | — | dGH |
概述
电光美人（Melanotaenia praecox）体形较小、性情温和，却很活跃，需要足够横向空间和同种伙伴。水草、柔化的照明及高水质有利于它呈现体色。
分布与栖息地
原生于印度尼西亚新几内亚岛的曼伯拉莫河水系。可见于主河道旁较急的支流，以及周围沼泽、湿地，常聚集在水草、淹没的树根和木头周围。
饲养环境
底面积至少约 60 × 30 cm，不能因鱼小就省略游动空间。草丛间应保留泳道和雄鱼展示区域，可用浮水植物柔化光线，避免过于明亮。每周部分换水，维持稳定的高水质。
食性与喂食
属于不挑食的杂食鱼，多数干饲料、冷冻饵和活饵都能接受，规律添加适口活饵有利于保持体色。
习性与混养
适合与体形相仿、温和且水质需求相容的鱼同养。至少六至八条同种成群，空间足够可更多，既能减轻受惊，也有助雄鱼展示。
雌雄区分
成年雄鱼比雌鱼更大、颜色更鲜明，体高也随成熟而增加。
繁殖
属于散卵型，产卵不算难，鱼苗早期更需细心。先群体调养，再选一对状态好的亲鱼，以细叶水草或产卵拖把收卵，采用温和气动过滤。繁殖水宜略硬、接近中性，温度约 24–26.5 °C，无须铺底砂。
产卵可持续数周，每天少量，卵带附着细丝。成鱼会吃卵，宜频繁检查产卵介质，把卵移入水质相同的育苗缸。卵约七至十天孵化，细小鱼苗先喂草履虫等微型饵，一周左右再逐步转为丰年虾无节幼体等游动饵。初期鱼苗靠近水面，沉底食物并不适用；单批后代数量通常比其他一些彩虹鱼略多。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
Small size does not make Melanotaenia praecox a sedentary fish. This peaceful rainbowfish is active and needs horizontal swimming room alongside a social group. Plant cover, softened lighting, and consistently good water help it display its color.
Distribution & habitat
It is restricted to the Mamberamo drainage of Indonesian New Guinea. Fish inhabit fast tributaries as well as nearby swamps and marshes, gathering around plants, submerged roots, and logs.
Aquarium setup
Provide a base around 60 × 30 cm or larger. Leave open lanes between planted areas for movement and male displays. Floating vegetation can diffuse the light, since this species does not favor bright conditions. Weekly partial water changes are recommended to maintain high water quality.
Diet & feeding
An adaptable omnivore, it accepts most dry, frozen, and live foods. Include suitable live prey regularly to support good coloration.
Behaviour & compatibility
Choose placid companions of similar size with compatible water requirements. Maintain at least six to eight conspecifics, preferably more where space permits. A secure group reduces skittishness and encourages males to display.
Sexual dimorphism
Adult males are larger and brighter than females, developing a deeper body with maturity.
Breeding
Egg scattering is relatively easy to achieve, but early fry rearing needs attention. Condition adults together before moving a well-conditioned pair to a gently filtered breeding setup. Fine plants or mops collect the eggs, and substrate is optional. Slightly hard water near neutral, at about 24–26.5 °C, is suitable.
Small daily batches can continue for several weeks. Eggs attach to the spawning medium by fine threads. Because adults eat them, inspect the material frequently and transfer eggs into matching water. Hatching occurs in approximately seven to ten days. Feed microscopic organisms initially, adding small swimming prey such as brine-shrimp nauplii after about a week. The tiny fry stay near the surface, so sinking food is inappropriate. Broods tend to be somewhat larger than in some other rainbowfishes.
来源
- https://www.seriouslyfish.com/species/melanotaenia-praecox(抓取于 2026-10-10)
melanotaenia-praecox · 文件: data/species/melanotaenia-praecox.md · 状态: 草稿