red-nose tetra (Hemigrammus bleheri)

科: Characidae

red-nose tetraは南米のリオネグロ流域（ブラジル、コロンビア）に原生する温和な雑食性の淡水魚（カラシン科）。飼育難度は中級者向き程度です。

飼育条件

水温: 23–26 °C
pH: 5–6
GH硬度: 5–12 dGH
成魚の体長: 2.5–3.6 cm
最小水槽: 36 L
泳ぐ水層: Mid-water swimmer; keep 10+
飼育難度: 中級
性格: Peaceful
原産地: 南美洲内格罗河流域（巴西、哥伦比亚）

種の概要

A Characidae species: Hemigrammus bleheri lives mid-water swimmer; keep 10+ over clear streams, rivers and still waters. Peaceful. Adults reach 2.5–3.6 cm. It is one of the aquarium-kept Hemigrammus species we profile, alongside Hemigrammus ocellifer, Hemigrammus rhodostomus, Hemigrammus erythrozonus.

原生環境

生息地: Clear streams, rivers and still waters
水流: Moderate flow
溶存酸素: Average oxygen needs

レイアウトと設備

底床: Smooth gravel and sand with open floor space
流木・石組: Driftwood, water-worn stones and shelters that mimic the native biotope
水草: Hardy plants on hardscape; keep the floor open

性格・餌・混泳

群泳性: Keep 10+; larger groups settle better
餌: Omnivore; quality prepared foods with variety
おすすめの混泳相手: Amur False Gudgeon — Similar size and water needs
Striped Bitterling — Similar size and water needs
Acheilognathus gracilis — Similar size and water needs
混泳しないほうがいい相手: Large aggressive cichlids — Bullying and injury risk
Known fin nippers — Constant stress and fin damage

繁殖と注意点

雌雄の違い: Males are typically slimmer and more intensely colored; females fuller-bodied
繁殖方法: Egg-scatterer over fine plants; condition with rich foods and simulate seasonal changes

よくある質問

red-nose tetraは飼育しやすい？

難易度：中級。Peaceful。

red-nose tetraの適水温と水質は？

適水温 23–26 °C。23–26 °C recorded range。Standard heater to hold the mid-range steadily。

red-nose tetraの大きさと水槽サイズは？

成魚は 2.5–3.6 cm。最低 36 L。

red-nose tetraの餌は？

Omnivore; quality prepared foods with variety。1日2回の少量給餌が理想的。

red-nose tetraは混泳できる？

可能。Peaceful。おすすめ：Amur False Gudgeon — Similar size and water needs, Striped Bitterling — Similar size and water needs, Acheilognathus gracilis — Similar size and water needs。Large aggressive cichlids — Bullying and injury risk, Known fin nippers — Constant stress and fin damageとの混泳は避ける。

red-nose tetraの原産地は？

南美洲内格罗河流域（巴西、哥伦比亚）原産。Clear streams, rivers and still waters、Moderate flow。

red-nose tetraの繁殖は？

繁殖：Egg-scatterer over fine plants; condition with rich foods and simulate seasonal changes。Males are typically slimmer and more intensely colored; females fuller-bodied。