Betta krataios
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Betta krataios |
| 分类 | 攀鲈目 Anabantiformes › 丝足鲈科 Osphronemidae › Betta |
| 水体 | 淡水 |
| 原产地 | 印度尼西亚 |
| 成体体长 | 4.5 cm |
| 饲养难度 | 中等 |
| 最小水体 | 41 L |
| 最小缸长 | 45 cm |
| 群居方式 | 成对 |
| 水流偏好 | 低 |
| 外部数据 | seriouslyfish betta-krataios;fishbase 62728 |
| 繁殖方式 | 口孵 |
| 特征 | 会跳缸: 是 |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 22–28 | — | °C |
| pH | 5–7 | — | — |
| 总硬度 | 1–5 | — | dGH |
概述
Betta krataios 是雄性口孵斗鱼，圆形尾鳍是与相似近亲区分的实用线索。它生活在阴暗的森林沼泽水系，适合安静、遮蔽多的软水缸。
分布与栖息地
似乎特有于印度尼西亚婆罗洲西加里曼丹的卡普阿斯河下游部分区域，记录包括坤甸周边、桑高和万多一带。常见于森林沼泽溪流和水潭，部分地点水很浅。
树冠和密集岸边植物遮光，腐殖物把水染成褐色，矿物质少且偏酸。底部主要是落叶、枝条和沉没树根。
饲养环境
一对至少需要约 45 × 30 cm 的缸底面积，组群要更大。沉木、枝条、陶盆或管道组成多个阴暗藏身点，落叶增加遮蔽及微生物来源，裸底也可使用。
采用弱光、耐阴植物和浮水植物，成熟海绵过滤轻缓运行。使用很软的酸性水，碳酸盐硬度应很低，必要时准备可靠软水。盖好缸防跳，并留水面上方潮湿空气与呼吸通道。
食性与喂食
自然可能捕食昆虫和其他小型无脊椎动物。适应后一般能吃干粮，仍应规律补充水蚤、丰年虾、红虫等活饵或冷冻饵。控制份量，避免过肥。
习性与混养
可成对或组群，但普通混养缸未必合适。最好单养，或选极温和、条件相近的伙伴；体大、活跃或抢食强的鱼会压制它。
雌雄区分
雄鱼通常更大，头较宽，头部亮鳞更多，各鳍延伸也更长。
繁殖
求偶后反复缠抱，受精卵先落在雄鱼臀鳍上，由雌鱼拾起再吐出，雄鱼接住含入口中。这个过程分批重复，最终由雄鱼口孵。
受惊或缺乏经验的雄鱼可能吞卵或提前吐卵，宜避免为清场而捕捞其他鱼造成干扰。含孵约 7～14 天后释放能自由游动的鱼苗，可另养或随亲鱼成长；关于随亲鱼生长更快的说法仍是部分经验。
保持水面空气温暖潮湿。幼鱼可吃微虫和丰年虾无节幼体，每日少量多样喂 2～3 次，避免大量单一喂丰年虾；规律小量换水，减少骤变。
补充说明
旧贸易代号为 Betta sp. ‘Kapuas’。与相似近亲（Betta dimidiata）相比，本种尾鳍较圆，后者尾鳍更延长、呈铲形；本种活体鳃盖亮鳞偏蓝绿色，体色偏黄褐，也有辅助辨识价值。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
Betta krataios is a paternal mouthbrooder whose rounded tail is a useful recognition feature. Shaded forest-swamp accommodation suggests a quiet aquarium with abundant cover and soft acidic water.
Distribution & habitat
It appears endemic to parts of the lower Kapuas drainage in West Kalimantan, Indonesian Borneo, with records from the Pontianak area, Sanggau, and Mandor. Forest-swamp streams and pools can be very shallow.
Dense canopy and bankside vegetation exclude much of the light. Decomposing material stains the mineral-poor acidic water, and leaves, branches, and submerged roots dominate the bottom.
Aquarium setup
A pair needs at least a 45 × 30 cm footprint, with more room for a group. Arrange wood, branches, pots, or pipes into shaded retreats. Leaves provide extra shelter and microbial food useful to fry; a bare base is also suitable.
Use low light, appropriate plants, floating cover, and gently operating mature sponge filtration. Very soft acidic water with little carbonate hardness may require a reliable soft-water source. Secure the lid against jumping while retaining humid air and access above the surface.
Diet & feeding
Insects and other small invertebrates are thought to be natural prey. Acclimated fish generally accept dry foods, supplemented regularly with water fleas, Artemia, bloodworms, and similar live or frozen items. Avoid excessive portions.
Behaviour & compatibility
Pairs and groups are possible, but an ordinary community setup is often unsuitable. Dedicated accommodation or exceptionally gentle companions with matching requirements is preferable. Large, busy, or competitive fishes can intimidate it and monopolize food.
Sexual dimorphism
Males usually grow larger and broader-headed, with more reflective scales on the head and longer fins.
Breeding
Following courtship, repeated embraces release eggs onto the male's anal fin. The female collects them and spits them out for him to catch. He eventually holds the full clutch for oral incubation.
Stress or inexperience can trigger swallowing or premature release, so avoid disrupting the aquarium merely to catch other fish. Swimming young emerge after about 7–14 days. They can be reared separately or with their parents; faster growth alongside adults has been reported but is not assured.
Warm, humid air supports labyrinth development. Start fry on microworms and Artemia nauplii, with varied small meals two or three times daily and no excessive reliance on the latter. Regular modest water changes limit abrupt shifts.
Notes
The former trade label was Betta sp. ‘Kapuas’. Its rounded tail contrasts with the extended, spade-like tail of Betta dimidiata. Turquoise gill-cover scales and yellow-brown coloration provide further recognition clues.
来源
- https://www.seriouslyfish.com/species/betta-krataios(抓取于 2026-10-10)
betta-krataios · 文件: data/species/betta-krataios.md · 状态: 草稿