头尾灯 (Hemigrammus ocellifer)

科: Characidae

头尾灯为脂鲤科鱼类，和平但胆小，裸缸强光下易紧张，原生分布于南美洲及菲律宾。中上层群游鱼，体色与胆量随群体一起到来。成体约 3.7–5.4 cm，群游性，8–10 尾以上体色与状态最佳，适宜水温 22–26 °C。群要大，光要柔。

饲养参数

水温: 22–26 °C
pH: 6–8
GH 硬度: 5–19 dGH
成体体长: 3.7–5.4 cm
最小缸体: 35 L
水层: Bottom-dwelling
饲养难度: 中等
性情: Peaceful but shy in bare or bright tanks
产地: 南美洲

物种概述

Hemigrammus ocellifer is a Characidae from South America. In the wild it prefers blackwater streams and flooded forest; in the aquarium it stays peaceful but shy in bare or bright tanks. Plan on 3.7–5.4 cm of adult fish at 22–26 °C. Related profiles: Hemigrammus bleheri, Hemigrammus rhodostomus, Hemigrammus erythrozonus.

原生生境

栖息地: Blackwater streams and flooded forest
水流: Still to gentle current
溶氧: Moderate

造景与硬件

底床: Dark sand and leaf litter
硬景观: Driftwood and dense plant edges
水草: Floating and shaded plants appreciated

性格食性与混养

群游性: Shoaling; 8–10+ unlocks full colour and calm
食性: Unfussy; a varied small diet preserves colour
推荐混养: Other small peaceful tetras and rasboras — Form a mixed, calm mid-water mass
避免混养: Single-species isolation — A lone tetra is a stressed tetra

繁殖与备注

雌雄差异: Subtle; females fuller-bodied
繁殖方式: Scatters eggs among plants; light-proof the setup or add mops

常见问题

头尾灯好养吗？

中等难度，稳定水质比高端设备更关键。Peaceful but shy in bare or bright tanks，Shoaling; 8–10+ unlocks full colour and calm。

头尾灯适合什么水温和水质？

水温控制在 22–26 °C，重点是稳定。Heater for stable tropical warmth。

头尾灯能长多大，需要多大的缸？

成体约 3.7–5.4 cm；最小缸体 35 L，并留出活动空间。

头尾灯吃什么？

Unfussy; a varied small diet preserves colour。它在Dark sand and leaf litter上自然觅食，投喂可少量多次。

头尾灯能和其他鱼混养吗？

Peaceful but shy in bare or bright tanks。推荐混养：Other small peaceful tetras and rasboras — Form a mixed, calm mid-water mass。避免与Single-species isolation — A lone tetra is a stressed tetra同缸。

头尾灯产自哪里？

产地为南美洲，典型栖息地是Blackwater streams and flooded forest，对溶氧要求一般。

头尾灯会跳缸吗？

跳缸风险低，但加缸盖更稳妥。

头尾灯怎么繁殖？

人工环境下：Scatters eggs among plants; light-proof the setup or add mops。Subtle; females fuller-bodied。