イチモンジタナゴ (Acheilognathus cyanostigma)

科: Cyprinidae

イチモンジタナゴは朝鮮半島、日本に原生する温和な雑食性の淡水魚（コイ科）。飼育難度は中級者向き程度です。

飼育条件

水温: 18–26 °C
pH: 6.5–7.5
GH硬度: 5–15 dGH
成魚の体長: 4.2–6 cm
最小水槽: 60 L
泳ぐ水層: Mid-water swimmer; keep 6+
飼育難度: 中級
性格: Peaceful
原産地: 日本・朝鮮半島

種の概要

A Cyprinidae species native to Japan & the Korean Peninsula: Acheilognathus cyanostigma lives mid-water swimmer; keep 6+ over clear streams, rivers and still waters. Peaceful. Adults reach 4.2–6 cm. It is one of the aquarium-kept Acheilognathus species we profile, alongside Acheilognathus barbatulus, Acheilognathus gracilis, Acheilognathus macropterus.

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 6+; 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
China-Bitterling — Similar size and water needs
Acanthorhodeus chankaensis — 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: Spawning; condition with rich foods and simulate seasonal changes

よくある質問

イチモンジタナゴは飼育しやすい？

中級向き。水質の安定が重要。Peaceful。Keep 6+; larger groups settle better。

イチモンジタナゴの適水温と水質は？

適水温 18–26 °C。Community-standard range; verify locally。Standard heater to hold the mid-range steadily。

イチモンジタナゴの大きさと水槽サイズは？

成魚は 4.2–6 cm。最低 60 L。

イチモンジタナゴの餌は？

Omnivore; quality prepared foods with variety。Smooth gravel and sand with open floor space上で採餌する性質を活かし、沈む餌も与える。

イチモンジタナゴは混泳できる？

Peaceful。混泳の相手：Amur False Gudgeon — Similar size and water needs, China-Bitterling — Similar size and water needs, Acanthorhodeus chankaensis — Similar size and water needs。Large aggressive cichlids — Bullying and injury risk, Known fin nippers — Constant stress and fin damageは避ける。

イチモンジタナゴの原産地は？

日本・朝鮮半島原産。Clear streams, rivers and still waters、Moderate flow。

イチモンジタナゴの繁殖は？

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