漫游低线鱲
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Barilius vagra |
| 别名 | 漫游低線鱲、Cyprinus vagra、Opsarius isocheilus、Opsarius bicirratus、Opsarius piscatorius、Barilius alburnus |
| 分类 | 鲤形目 Cypriniformes › 鲤科 Cyprinidae › Barilius |
| 水体 | 淡水 |
| 原产地 | 孟加拉国、印度、尼泊尔 |
| 成体体长 | 12.5 cm |
| 饲养难度 | 中等 |
| 最小水体 | 540 L |
| 最小缸长 | 150 cm |
| 群居方式 | 群游 |
| 特征 | 会跳缸: 是;吃小鱼: 是 |
| 外部数据 | seriouslyfish barilius-vagra;fishbase 24334 |
| 食性 | 肉食 |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 18–26 | — | °C |
| pH | 6–7.5 | — | — |
| 总硬度 | 2–12 | — | dGH |
概述
漫游低线鱲（Barilius vagra）是活跃的河流鱼，体侧竖纹不延伸到侧线下方。观赏市场偶尔能见到，但它的抢食速度、空间与供氧需求都不适合普通小型混养缸。
分布与栖息地
确定的主要分布为印度北部、尼泊尔和孟加拉国的恒河、布拉马普特拉河水系。阿富汗、巴基斯坦和斯里兰卡的记录仍需澄清，可能是其他种。它栖息于富氧流水，河床为砾石、卵石、大石与基岩。
饲养环境
用圆滑石块、沙砾与少量沉木模拟河床，同时留下大段无遮挡泳道。保持稳定、清洁的成熟水体，适度造流并充分供氧，每周换水约 30%～50%。它不能适应长期积污或未成熟的新缸；缸盖需贴合，防止跃出。
食性与喂食
以水面捕捉昆虫为主，可能兼食小鱼及底栖无脊椎动物。干粮之外经常补充红虫、丰年虾、切碎蚯蚓，或经过预先喂养的适口小昆虫。
习性与混养
群居但并非整齐同步群游，至少 5 条饲养更合适。两三条时常由弱鱼承受持续欺负，单养则可能对相似鱼发起攻击。宜配体型接近、健壮的鱼，避开胆小慢游种和可能被吞食的小鱼。
雌雄区分
成熟怀卵雌鱼预期会更丰满，但目前不能把这一推测当作已经验证的雌雄鉴别特征。
补充说明
体侧一般有 10～14 条竖纹，背鳍与尾鳍外缘呈灰色。辨认时应综合斑纹、鳍形和产地，不能把分布不明的相似鱼自动归入本种。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
Barilius vagra is an energetic river fish whose flank bars stop above the lower side of the body. It appears only occasionally in the trade and requires more planning than its modest size might suggest, particularly for swimming space and feeding competition.
Distribution & habitat
Its established range centers on the Ganges and Brahmaputra basins in Nepal, northern India and Bangladesh. Records farther west and in Sri Lanka may involve other species. Typical habitat consists of oxygenated rivers and tributaries with coarse mineral substrates and moderate to strong flow.
Aquarium setup
A stream-style aquarium should emphasize clear swimming routes, not dense decoration. Combine rounded stones and gravel with limited woodwork. Establish the biological filter first, maintain oxygen-rich water and useful circulation, and make weekly changes of about 30–50%. Prevent organic debris from accumulating and secure the top.
Diet & feeding
In nature, surface feeding focuses on insects, with other small animal prey probably included. A mix of prepared food, live or frozen invertebrates and suitably sized terrestrial insects provides a more useful captive menu than dry food alone.
Behaviour & compatibility
Maintain at least five individuals rather than a pair or isolated specimen. Social ranking is normal, but too few fish can concentrate harassment. Companions should be robust, comparably sized and suited to flowing water. Its rapid feeding can disadvantage quieter fish, and tiny species risk predation.
Sexual dimorphism
A ripe female may be heavier-bodied, although this remains an unconfirmed expectation rather than a validated diagnostic feature.
Notes
Useful visible characters include ten to fourteen flank bars and gray edging on the dorsal and caudal fins. The uncertain identity of some outlying records makes collection information particularly valuable.
来源
- https://www.seriouslyfish.com/species/barilius-vagra(抓取于 2026-10-10)
barilius-vagra · 文件: data/species/barilius-vagra.md · 状态: 草稿