Head-and-tail light tetra (Hemigrammus ocellifer)

科: Characidae

Head-and-tail light tetra（Hemigrammus ocellifer）はカラシン科に分類される淡水魚で、南米に分布する。成魚は約 3.7–5.4 cm、適水温 22–26 °C。

飼育条件

水温: 22–26 °C
pH: 6–8
GH硬度: 5–19 dGH
成魚の体長: 3.7–5.4 cm
最小水槽: 35 L
泳ぐ水層: Bottom-dwelling
飼育難度: 中級
性格: Peaceful but shy in bare or bright tanks
原産地: 南米

種の概要

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.

原生環境

生息地: Blackwater streams and flooded forest
水流: Still to gentle current
溶存酸素: Moderate

レイアウトと設備

底床: Dark sand and leaf litter
流木・石組: Driftwood and dense plant edges
水草: Floating and shaded plants appreciated

性格・餌・混泳

群泳性: Shoaling; 8–10+ unlocks full colour and calm
餌: Unfussy; a varied small diet preserves colour
おすすめの混泳相手: Other small peaceful tetras and rasboras — Form a mixed, calm mid-water mass
混泳しないほうがいい相手: Single-species isolation — A lone tetra is a stressed tetra

繁殖と注意点

雌雄の違い: Subtle; females fuller-bodied
繁殖方法: Scatters eggs among plants; light-proof the setup or add mops

よくある質問

Head-and-tail light tetraは飼育しやすい？

中級向き。水質の安定が重要。Peaceful but shy in bare or bright tanks。Shoaling; 8–10+ unlocks full colour and calm。

Head-and-tail light tetraの適水温と水質は？

22–26 °C が目安。急変を避け、Heater for stable tropical warmth。

Head-and-tail light tetraの大きさと水槽サイズは？

成魚は 3.7–5.4 cm。最低 35 L。

Head-and-tail light tetraの餌は？

Unfussy; a varied small diet preserves colour。Dark sand and leaf litter上で採餌する性質を活かし、沈む餌も与える。

Head-and-tail light tetraは混泳できる？

Peaceful but shy in bare or bright tanks。混泳の相手：Other small peaceful tetras and rasboras — Form a mixed, calm mid-water mass。Single-species isolation — A lone tetra is a stressed tetraは避ける。

Head-and-tail light tetraの原産地は？

南米のBlackwater streams and flooded forestが生息地。

Head-and-tail light tetraは飛び出す？

リスクは低いが、ふたがあると安心。

Head-and-tail light tetraの繁殖は？

繁殖：Scatters eggs among plants; light-proof the setup or add mops。Subtle; females fuller-bodied。