犬齿脂鲤
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Cynodon gibbus |
| 别名 | 犬齒脂鯉、Rhaphiodon gibbus |
| 分类 | 脂鲤目 Characiformes › 犬齿脂鲤科 Cynodontidae › Cynodon |
| 水体 | 淡水 |
| 原产地 | 玻利维亚、巴西、哥伦比亚、厄瓜多尔、圭亚那、秘鲁、委内瑞拉 |
| 成体体长 | 28 cm |
| 饲养难度 | 中等 |
| 最小水体 | 1181 L |
| 最小缸长 | 210 cm |
| 群居方式 | 群游 |
| 特征 | 会跳缸: 是;吃小鱼: 是 |
| 外部数据 | seriouslyfish cynodon-gibbus;fishbase 25715 |
| 食性 | 肉食 |
| 性情 | 温和 |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 24–28 | — | °C |
| pH | 6–8 | — | — |
| 总硬度 | 2–15 | — | dGH |
概述
犬齿脂鲤（Cynodon gibbus）是相对温和、容易被强势鱼压制的食鱼性脂鲤。虽然成年体形比部分近缘鱼更适合大型私人设施，它仍需要很宽阔的泳道、成熟水质和按吞咽能力筛选的伙伴。
分布与栖息地
广见于亚马孙河盆地，从秘鲁马拉尼翁河、乌卡亚利河延伸至巴西多个支流，也见于委内瑞拉奥里诺科河中下游及圭亚那鲁普努尼河。巴西东北部皮恩达雷河也有少量记录。
成鱼多利用白水或黑水大河干道及较大支流的开阔水域。
饲养环境
底面积至少约 210 × 75 cm。沙、细砾、不同大小的圆石及少量沉木可模拟河流环境，但必须保留大量开放游动空间。
对有机废物积累不耐受，不能放入过滤未成熟的新缸。保持高溶氧、适度水流及稳定水质，每周换水约 30%–50%。缸盖应严密，避免跃出风险。
食性与喂食
是专性食鱼者，能吞下相对较大的猎物。新进口个体可能只认活鱼，通常可以逐渐转食可辨识为食物的非活体替代品。
不要长期依赖来源不明的饵料鱼，病原与寄生虫风险以及营养状态都需考虑；牛心、鸡肉等哺乳类或禽类肉也不宜作为菜单。
习性与混养
可专门饲养，或与体形相近、温和且无法被吞下的鱼组合。它虽是捕食者，却容易被强势缸友压制。
同种群体在足够大的设施中更合适，至少三尾较好。不能把“不主动攻击大鱼”当作与小鱼相容的依据。
补充说明
各种地方商品名可能同时用于其他犬齿脂鲤，辨认可结合尾鳍基部暗带、鳍条与体形，不能只依共用标签。普通缸内繁殖及可靠雌雄差异缺少相关资料，不宜从近缘鱼推演流程。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
Cynodon gibbus is a relatively placid fish predator that can be dominated by assertive companions. Its adult size is more manageable than that of some relatives, but it still requires extensive swimming room, mature water conditions, and careful assessment of mouth-size risks.
Distribution & habitat
It ranges broadly through the Amazon basin from Peru's Marañon and Ucayali to numerous Brazilian tributaries, with records in Venezuela's middle and lower Orinoco and Guyana's Rupununi. A few specimens have also been recorded from northeastern Brazil's Pindaré.
Adults occupy open water in main channels and larger tributaries of both whitewater and blackwater systems.
Aquarium setup
Provide a footprint of at least about 210 × 75 cm. Sand, gravel, rounded rocks, and optional wood can form a river layout while preserving abundant open space.
Organic-waste accumulation is poorly tolerated. Use mature filtration, high oxygen availability, moderate current, and stable chemistry, with weekly changes of roughly 30–50%. Secure the cover against potential jumping.
Diet & feeding
An obligate fish-eater, it can consume surprisingly large prey. New imports may accept only live fish initially, but most can learn to recognize nonliving alternatives.
Routine feeder-fish use introduces disease, parasite, and nutritional concerns. Mammalian and avian meats such as beef heart or chicken are inappropriate substitutes.
Behaviour & compatibility
Dedicated housing or similarly sized nonaggressive companions beyond swallowing size are appropriate options. Despite its predatory feeding, it is easily intimidated.
A conspecific group of at least three is preferable where facilities are large enough. Relative peace toward large neighbors does not establish safety for small fishes.
Notes
Regional sales names may apply to other dogtooth characins. Tail-base markings, fin characters, and body proportions are more useful than a shared label. Reliable sexing and ordinary aquarium breeding information are lacking rather than supplied by assumptions about relatives.
来源
- https://www.seriouslyfish.com/species/cynodon-gibbus(抓取于 2026-10-10)
cynodon-gibbus · 文件: data/species/cynodon-gibbus.md · 状态: 草稿