拉氏细脂鲤 · Green Fire Tetra
概要
| 字段 | 值 |
|---|---|
| 类别 | 鱼 |
| 学名 | Aphyocharax rathbuni |
| 别名 | 拉氏細脂鯉、Rathbun's Bloodfin、Redflank Bloodfin、Rubinsalmler、Aphyocharax stramineus |
| 分类 | 脂鲤目 Characiformes › 脂鲤科 Characidae › Aphyocharax |
| 水体 | 淡水 |
| 原产地 | 阿根廷、巴西、巴拉圭、乌拉圭 |
| 成体体长 | 4.5 cm |
| 饲养难度 | 中等 |
| 最小水体 | 54 L |
| 最小缸长 | 60 cm |
| 群居方式 | 群游 |
| 外部数据 | seriouslyfish aphyocharax-rathbuni;fishbase 12340 |
| 繁殖方式 | 散卵 |
水质参数
| 参数 | 耐受范围 | 最适范围 | 单位 |
|---|---|---|---|
| 水温 | 20–26 | — | °C |
| pH | 6.5–7.5 | — | — |
| 总硬度 | 2–20 | — | dGH |
概述
拉氏细脂鲤（Aphyocharax rathbuni）是适合成群观察的活泼小型脂鲤。它有咬鳍的倾向，选择混养对象时，行动敏捷、体质健壮的鱼比慢游或长鳍鱼更合适。
分布与栖息地
分布于巴西、巴拉圭、乌拉圭和阿根廷的巴拉圭河、巴拉那河及乌拉圭河水系，常见于植被遮阴的溪流。
饲养环境
种植水草并留出活动区，以细砂配合沉木、根枝和圆滑卵石布景。水流保持适中，灯光强弱不是最关键的条件，整体遮蔽和空间安排更重要。
食性与喂食
通常不挑食，能接受多种水族饲料。干饲料与活饵、冷冻饵料搭配，繁殖前可增加合适活饵帮助亲鱼恢复良好状态。
习性与混养
至少六条同养，让群体内有足够互动。避免长鳍和行动缓慢的同伴；较敏捷、健壮的小鱼更容易适应它的活动方式。仍需留意咬鳍表现，而不能把所有小型脂鲤都当作完全安静的混养鱼。
雌雄区分
雌鱼在成熟和抱卵时腹部较丰满，雄鱼相对纤细。
繁殖
属于较容易尝试的群体散卵型。繁殖缸可采用约 60 × 30 × 30 cm 的布置，使用软水，繁殖用水可接近 pH 6.5；放入细叶植物和海绵过滤，灯光很暗或不专门开灯。亲鱼先以活饵调养，也可暂时分开雌雄后再合群。
状态好的亲鱼通常在合群后一天左右产卵，有时等待更久，产卵多在早晨。一窝可达约五百粒，卵会黏附植物。卵约两三天孵化，幼鱼再过四五天开始自由游动。先投喂纤毛虫等微小食物，再过渡到丰年虾无节幼体和细粉饲料；规律换水有助于维持快速生长所需的水质。
图片
图片来自 SeriouslyFish,版权归各摄影者所有。
English
Overview
Aphyocharax rathbuni, the green fire tetra, is an active small fish best observed in a group. Its tendency to nip fins deserves attention when planning a community. Robust, agile companions are a better match than slow fish with flowing fins.
Distribution & habitat
It inhabits the Paraguay, Paraná, and Uruguay drainage systems across Brazil, Paraguay, Uruguay, and Argentina. Vegetation commonly shades the streams where it occurs.
Aquarium setup
Provide planted cover while retaining space for swimming. Sand, smooth pebbles, branches, and wood make a suitable layout. Moderate circulation is appropriate, and lighting intensity is not especially critical.
Diet & feeding
It readily accepts a broad selection of aquarium foods. Vary dry food with live and frozen items. Live foods are particularly useful when conditioning adults for spawning.
Behaviour & compatibility
Start with at least six individuals so the fish have a functioning social group. Avoid slow-moving species and long-finned varieties. Choose sturdy, active companions and continue watching for nipping after introduction.
Sexual dimorphism
Adult females develop a fuller body, especially when carrying eggs. Males retain a more slender shape.
Breeding
Group spawning is relatively straightforward. A separate aquarium around 60 × 30 × 30 cm can be prepared with soft water near pH 6.5, fine-leaved plants, and sponge filtration. Keep illumination very low or omit dedicated lighting. Condition the adults on live food; separating the sexes beforehand is an option.
Spawning often occurs during the morning within a day of introducing the group, although it can take longer. As many as about five hundred adhesive eggs may be scattered among plants. They hatch after two or three days, with independent swimming beginning another four or five days later. Start the fry on infusoria and gradually introduce newly hatched brine shrimp or finely powdered food. Regular water changes support their rapid growth.
来源
- https://www.seriouslyfish.com/species/aphyocharax-rathbuni(抓取于 2026-10-10)
aphyocharax-rathbuni · 文件: data/species/aphyocharax-rathbuni.md · 状态: 草稿