Annamia cf. thuathienensis
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Annamia cf. thuathienensis |
| 分类 | 鲤形目 Cypriniformes › 腹吸鳅科 Gastromyzontidae › Annamia |
| 水体 | 淡水 |
| 原产地 | 越南 |
| 成体体长 | 10 cm |
| 饲养难度 | 中等 |
| 最小水体 | 108 L |
| 最小缸长 | 120 cm |
| 群居方式 | 群游 |
| 性情 | 温和 |
| 水流偏好 | 高 |
| 外部数据 | seriouslyfish annamia-thuathienensis |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 16–22 | — | °C |
| pH | 6–7.5 | — | — |
| 总硬度 | 1–10 | — | dGH |
概述
Annamia cf. thuathienensis 是身份仍待厘清的越南溪流鳅。维护应围绕洁净、富氧的流水环境安排，但其野外生态有不少内容借鉴自近缘种，不能全部当作本种实测结果。
分布与栖息地
描述产地为越南中部承天顺化地区的博河，尚无其他明确地点记录。具体栖境大体未确认，推测与同属近缘种（Annamia normani）相似，生活在清澈浅溪、急流和石质河床附近。成鱼急流、幼鱼浅水的差异记录来自该近缘种。
饲养环境
采用底面至少约 120 × 30 cm 的长缸，以砂、砾石和大小不一的圆石形成流水环境，可配少量根枝。亮光有助于石面附着生物生长，耐受水流的爪哇蕨、黑木蕨或水榕可固定在硬景上。
保持高溶氧，循环量可参考每小时缸水量的十至十五倍，并按需补充造流和气石。每周换水约 30%～50%，减少有机废物积累。必须用已有稳定生物膜的成熟缸，不宜放入刚开设的环境。
食性与喂食
近缘种曾被观察到刮咬岩面坚硬的蓝藻层，幼鱼则摄食有机碎屑；这种偏好是否适用于本种或所有种群仍不清楚。饲养时可保留丰富附着生物，搭配螺旋藻类干粮以及红虫、水蚯蚓、丰年虾等食物。
购买时注意胸鳍与腹鳍之间是否明显瘦窄。虚弱个体应单独恢复，持续提供合适食物，待体况改善后再面对其他鱼的争食。
习性与混养
总体温和，伙伴首先要适应相似的流水和富氧条件。合适的溪流鲤科鱼、虾虎鱼或底栖鲶鱼可考虑，部分鳅类之间仍可能争执。
同属鱼在野外可聚成大群，饲养建议至少八条；数量过少或单独饲养容易胆怯。
雌雄区分
成熟雌鱼可能略大、体形较丰满，但这不是已充分证实的分性标准。
繁殖
尚无人工繁殖记录，野外可能季节性产卵。
补充说明
其原始描述使用越南语，身份长期存在疑问，部分名录未将其列为有效种。暂定的「cf.」标识应保留，避免将未确定的记录视作分类定论。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
The Vietnamese hillstream loach Annamia cf. thuathienensis has an unresolved identity. Care centers on a mature, clean, oxygen-rich stream aquarium, while much of its presumed ecology comes from comparison with a relative rather than direct study of this fish.
Distribution & habitat
The description concerns the Bô River in central Vietnam's Thua Thien-Hue region, with no additional definite sites given. Its habitat is poorly established. Shallow clear streams and rocky rapids are suggested by comparison with Annamia normani; observations of adults in rapids and juveniles in shallower water concern that relative.
Aquarium setup
Provide approximately 120 × 30 cm or more of floor space. Combine sand or gravel with rounded stones of varied sizes and optional woody roots. Strong illumination supports growth on exposed surfaces. Hardy attached plants, such as Java fern or anubias, can be tried.
High oxygen availability and circulation are essential; turnover around ten to fifteen aquarium volumes per hour is suggested, with extra pumps or aeration where needed. Change roughly 30–50% weekly and prevent organic waste from accumulating. Established biofilm and stable biological filtration are prerequisites.
Diet & feeding
Research on A. normani found adults biting cyanobacterial crusts from rocks, while juveniles consumed detritus. Whether the same specialization applies here, or even to every population of that relative, remains uncertain.
Maintain ample grazing surfaces and offer algae-rich prepared foods alongside suitable bloodworms, Tubifex, or Artemia. Newly imported hillstream loaches may be emaciated. A narrowed body between the paired fins merits particular attention; weak fish need continuous suitable food without competitors until they recover.
Behaviour & compatibility
The fish is generally peaceful, but companions must share its environmental requirements. Appropriate stream cyprinids, gobies, or catfish can be considered, while some loaches may squabble.
Large wild aggregations are known within the genus. Eight or more is the recommended captive group; isolated fish or very small groups tend to remain shy.
Sexual dimorphism
Mature females may be somewhat larger and fuller than males. This remains a tentative guide.
Breeding
Captive reproduction has not been recorded. Seasonal spawning in the wild is presumed.
Notes
The Vietnamese-language description has left significant identification questions, and some catalogs have not accepted the species as valid. Preserve the provisional identification rather than treating it as a settled taxonomic conclusion.
来源
- https://www.seriouslyfish.com/species/annamia-thuathienensis(抓取于 2026-10-10)
annamia-cf-thuathienensis · 文件: data/species/annamia-cf-thuathienensis.md · 状态: 草稿