双点波鱼 · Elegant Rasbora
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Rasbora elegans |
| 别名 | 雙點波魚 |
| 分类 | 鲤形目 Cypriniformes › 鲤科 Cyprinidae › Rasbora |
| 水体 | 淡水 |
| 成体体长 | 20 cm |
| 饲养难度 | 中等 |
| 最小水体 | 243 L |
| 最小缸长 | 120 cm |
| 群居方式 | 群游 |
| 性情 | 温和 |
| 特征 | 会跳缸: 是 |
| 外部数据 | seriouslyfish rasbora-elegans;fishbase 12179 |
| 原产地 | 马来西亚、新加坡、印度尼西亚 |
| 游动层 | 上层 |
| 繁殖方式 | 散卵 |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 22–25 | — | °C |
| 总硬度 | 2–12 | — | dGH |
概述
双点波鱼（Rasbora elegans）体侧没有连续暗色纵带，背鳍下方及尾柄各有斑点，部分个体还有较小的臀鳍上方斑。它是需要较大群养空间的温和波鱼，小缸易令它紧张。
分布与栖息地
原产马来半岛、新加坡及苏门答腊、婆罗洲区域；苏门答腊主岛的范围与婆罗洲北部边界仍不清楚。既见于有石砾的清澈流水林溪，也见于柔软酸性的缓流泥炭黑水。
饲养环境
群养至少考虑 120 × 45 × 45 厘米，留出开阔泳道。可采用流水石砾景观或弱光沉木落叶景观，水草按实际水流和光照选择。它常在表层活动，且能从细小缝隙跳出；缸盖应仔细封闭。保持清洁水质，防止有机废物累积，野生鱼从不同栖地条件转入缸内要缓慢适应。
食性与喂食
可能主要取食水生和陆生无脊椎动物。日常可搭配优质薄片、颗粒与红虫、水蚤、丰年虾等活饵或冷冻饵料。
习性与混养
至少 6 条同养有助发色和减少胆怯。虽然温和，体型仍会干扰很胆小或慢游的鱼，混养伙伴应有相当胆量并适应同样环境。
雌雄区分
成熟雌鱼腹部较圆，往往略大。
繁殖
被描述为散卵、不护卵，但家养繁殖成功情况不明确。可尝试近缘种的放大流程：约 120 厘米长浅缸、弱光和隔卵底，半缸水开始，放入调养后的一两对并逐渐补较凉水。约两天后移出亲鱼并用海绵过滤。属内常见孵化约 18～48 小时、平游再需一两天，仅作观察参考；预备适口微虫和丰年虾幼体。
补充说明
斑点深浅随地域种群而变，有的很淡。历史文献里的部分亚种现已作为独立物种处理，不能把这些名称下的鱼都归入本种。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
Rasbora elegans lacks a continuous dark lateral band. Instead, flank and tail-base spots mark its silver body, sometimes accompanied by a smaller spot above the anal fin. This peaceful rasbora needs generous group swimming space and may become nervous in cramped quarters.
Distribution & habitat
Records include the Malay Peninsula, Singapore and the Sumatra-Borneo region, although some island boundaries remain uncertain. Both clear, rocky forest streams and slower acidic peat waters are used. Habitat origin may therefore help guide acclimation.
Aquarium setup
A group requires at least 120 by 45 by 45 cm. Open swimming space and clean water take priority in either a river-style or shaded swamp-style layout. This surface-dwelling jumper needs a closely sealed cover. Avoid organic waste buildup and acclimate wild fish carefully when the new water differs from their source conditions.
Diet & feeding
Invertebrates are the presumed main natural food. Vary suitable prepared foods with live or frozen offerings rather than relying on a single feed.
Behaviour & compatibility
Six or more provide a more confident display. Choose sufficiently bold companions: even without aggression, its size can unsettle hesitant or slow-moving species.
Sexual dimorphism
Females usually become fuller-bellied and a little larger at maturity.
Breeding
Hobby breeding is uncertain, although an unguarded egg-scattering strategy is described. A method adapted from smaller relatives may be tried in a dim, shallow 120 cm tank with egg protection. Introduce conditioned pairs and gradually add cooler water, then remove adults after a couple of days. Use gentle filtration and suitable fry foods. Development times for the genus should not be treated as a confirmed timetable here.
Notes
Spot intensity varies geographically. Some names formerly treated as subspecies now represent distinct species, so old labels need interpretation.
来源
- https://www.seriouslyfish.com/species/rasbora-elegans(抓取于 2026-10-10)
rasbora-elegans · 文件: data/species/rasbora-elegans.md · 状态: 草稿