チョウコウハス (Opsariichthys bidens)

科: Cyprinidae

チョウコウハスは中国、朝鮮半島、ロシアに原生する温和な肉食性の淡水魚（コイ科）。飼育難度は中級者向き程度です。

飼育条件

水温: 10–20 °C
pH: 6.5–7.5
GH硬度: 5–15 dGH
成魚の体長: 18.3–26.1 cm
最小水槽: 261 L
泳ぐ水層: Upper; surface-oriented
飼育難度: 中級
性格: Semi-aggressive
原産地: 朝鲜半岛

種の概要

Opsariichthys bidens is a Cyprinidae. In the aquarium it stays semi-aggressive. Plan on 18.3–26.1 cm of adult fish at 10–20 °C. Related profiles: Opsariichthys pachycephalus, Opsariichthys evolans, Opsariichthys hainanensis.

原生環境

生息地: Clear streams, rivers and still waters
水流: Strong current with heavy aeration
溶存酸素: Demands high dissolved oxygen

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: Solitary, pairs or small groups
餌: Carnivore; quality prepared foods with variety; regular frozen or live foods
おすすめの混泳相手: Amur False Gudgeon — Similar size and water needs
Acanthorhodeus chankaensis — Similar size and water needs
Deep Body Bitterling — Similar size and water needs
混泳しないほうがいい相手: Small fish and shrimp — Live-prey size

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: Spawning; condition with rich foods and simulate seasonal changes

よくある質問

チョウコウハスは飼育しやすい？

中級者向き。Semi-aggressive。Solitary, pairs or small groups。

チョウコウハスの適水温と水質は？

10–20 °C が目安。急変を避け、Unheated or lightly heated; guard against summer heat。

チョウコウハスの大きさと水槽サイズは？

成魚は 18.3–26.1 cm。最低 261 L。

チョウコウハスの餌は？

Carnivore; quality prepared foods with variety; regular frozen or live foods。人工飼料に冷凍餌を組み合わせて。

チョウコウハスは混泳できる？

可能。Semi-aggressive。おすすめ：Amur False Gudgeon — Similar size and water needs, Acanthorhodeus chankaensis — Similar size and water needs, Deep Body Bitterling — Similar size and water needs。Small fish and shrimp — Live-prey sizeとの混泳は避ける。

チョウコウハスの原産地は？

朝鲜半岛原産。Clear streams, rivers and still waters、Strong current with heavy aeration。

チョウコウハスは飛び出す？

飛び出す種。ふたをしっかり閉める。

チョウコウハスの繁殖は？

繁殖：Spawning; condition with rich foods and simulate seasonal changes。Males are typically slimmer and more intensely colored; females fuller-bodied。