Onychostoma rarum

科: Cyprinidae

Onychostoma rarum（Onychostoma rarum）はコイ科に分類される淡水魚で、中国南部の山地渓流に分布する。成魚は約 23.7–34.8 cm、適水温 18–26 °C。

飼育条件

水温
18–26 °C
pH
6.5–7.5
GH硬度
5–15 dGH
成魚の体長
23.7–34.8 cm
最小水槽
500 L
泳ぐ水層
Active throughout the water column
飼育難度
中級
性格
Peaceful; keep with similar-sized calm tankmates
原産地
中国南部の山地渓流

種の概要

Onychostoma rarum is a Cyprinidae from southern Chinese mountain streams. In the wild it prefers clear streams and rivers over gravel; in the aquarium it stays peaceful. Plan on 23.7–34.8 cm of adult fish at 18–26 °C. Related profiles: Onychostoma barbatulum, Onychostoma angustistomata, Onychostoma elongatum.

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
Keep in a group of 4–6 for natural behaviour
餌
Omnivore; prepared foods with regular variety
おすすめの混泳相手
  • Robust schooling cyprinids — Add activity without conflict
混泳しないほうがいい相手
  • Much larger predators — Risk at night

繁殖と注意点

雌雄の違い
Males often slimmer and more colourful
繁殖方法
Breeding is straightforward scatter-spawning

よくある質問

Onychostoma rarumは飼育しやすい？

中級者向き。Peaceful; keep with similar-sized calm tankmates。Keep in a group of 4–6 for natural behaviour。

Onychostoma rarumの適水温と水質は？

18–26 °C が目安。急変を避け、Room temperature to heated, depending on origin。

Onychostoma rarumの大きさと水槽サイズは？

成魚は約 23.7–34.8 cm。Active throughout the water column。最小 500 L の水槽。

Onychostoma rarumの餌は？

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

Onychostoma rarumは混泳できる？

Peaceful; keep with similar-sized calm tankmates。混泳の相手：Robust schooling cyprinids — Add activity without conflict。Much larger predators — Risk at nightは避ける。

Onychostoma rarumの原産地は？

中国南部の山地渓流のClear streams and rivers over gravelが生息地。

Onychostoma rarumは飛び出す？

飛び出しの傾向は低い。標準のふたでOK。

Onychostoma rarumの繁殖は？

Breeding is straightforward scatter-spawning。Males often slimmer and more colourful。