ニブナ (Systomus subnasutus)

科: Cyprinidae

Systomus subnasutus（Systomus subnasutus）はコイ科に分類される淡水魚。成魚は約 15.8–23.1 cm、適水温 22–26 °C。

飼育条件

水温: 22–26 °C
pH: 6.5–7.5
GH硬度: 1–18 dGH
成魚の体長: 15.8–23.1 cm
最小水槽: 500 L
泳ぐ水層: Bottom-dwelling
飼育難度: 中級
性格: Mostly peaceful; some species nip fins

種の概要

A Cyprinidae species: Systomus subnasutus lives bottom-dwelling over gravel. Mostly peaceful; some species nip fins. Adults reach 15.8–23.1 cm. It is one of the aquarium-kept Systomus species we profile, alongside Systomus asoka, Systomus barbatus, Systomus clavatus.

原生環境

生息地: Clear streams and rivers over gravel
水流: Moderate, well-oxygenated current
溶存酸素: Appreciates well-oxygenated water

レイアウトと設備

底床: Fine gravel and sand
流木・石組: Water-worn stones and driftwood
水草: Hardy rooted plants along the margins

性格・餌・混泳

群泳性: Shoaling; keep in groups of 6 or more
餌: Omnivore; prepared foods with regular vegetable matter
おすすめの混泳相手: Similar-sized peaceful community fish — Similar size and water needs
混泳しないほうがいい相手: Much smaller fish — May outcompete or bully tiny tankmates

繁殖と注意点

雌雄の違い: Males often slimmer and more colourful
繁殖方法: Egg-scatterer; no parental care

よくある質問

ニブナは飼育しやすい？

難易度：中級。Mostly peaceful; some species nip fins。

ニブナの適水温と水質は？

22–26 °C が目安。急変を避け、Room temperature to heated, depending on origin。

ニブナの大きさと水槽サイズは？

成魚 15.8–23.1 cm 前後。Bottom-dwellingのため 500 L 以上の水槽を推奨。

ニブナの餌は？

Omnivore; prepared foods with regular vegetable matter。人工飼料に冷凍餌を組み合わせて。

ニブナは混泳できる？

Mostly peaceful; some species nip fins。混泳の相手：Similar-sized peaceful community fish — Similar size and water needs。Much smaller fish — May outcompete or bully tiny tankmatesは避ける。

ニブナの原産地は？

Clear streams and rivers over gravelに生息。Moderate, well-oxygenated current。Appreciates well-oxygenated water。

ニブナは飛び出す？

リスクは低いが、ふたがあると安心。

ニブナの繁殖は？

繁殖：Egg-scatterer; no parental care。Males often slimmer and more colourful。