タイリクバラタナゴ (Rhodeus ocellatus)

科: Cyprinidae

タイリクバラタナゴは中国、朝鮮半島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: 14–26 °C
pH: 7–8
GH硬度: 8–20 dGH
成魚の体長: 5–6 cm
最小水槽: 40 L
泳ぐ水層: Mid-water; short-fin bursts
飼育難度: 中級
性格: Peaceful; a true community fish
原産地: Eastern & central China — Yangtze and Yellow basins

種の概要

The rosy bitterling is China's living jewel — a small, deep-bodied carp that depends on freshwater mussels to breed. In the breeding season males flush iridescent rose and violet. In the aquarium it is peaceful, adaptable and fascinating, provided a few mussels or substitute spawning sites are offered.

原生環境

生息地: Slow rivers, ponds and lake margins
水流: Still to gentle
溶存酸素: Tolerates low oxygen well

レイアウトと設備

底床: Fine sand; a mussel bed anchors the biotope
流木・石組: Leaf litter and empty mussel shells
水草: Fine-leaved plants plus open swimming space

性格・餌・混泳

群泳性: Keep 6+; males display in groups
餌: Omnivore; algae, flakes and small live foods
おすすめの混泳相手: White cloud minnow — Cool-water cousins
Rosy barb — Similar size, similar water
Nerite snails — Share the same clean-up niche
混泳しないほうがいい相手: Cichlids — Too aggressive
Large labyrinth fish — Fin damage
Crayfish — Will eat them overnight

繁殖と注意点

雌雄の違い: Breeding males turn rose-violet with longer fins; females stay silver with a deeper belly
繁殖方法: Mussel spawner. The female deposits eggs inside a freshwater mussel's gills via a long ovipositor; the male fertilizes them at the siphon — fry emerge after 3–4 weeks.

よくある質問

タイリクバラタナゴは飼育しやすい？

難易度：中級。Peaceful。

タイリクバラタナゴの適水温と水質は？

18–24 °C が目安。急変を避け、Unheated or lightly heated; guard against summer heat。

タイリクバラタナゴの大きさと水槽サイズは？

成魚 6.4–9.2 cm 前後。Mid-water swimmer; keep 6+のため 92 L 以上の水槽を推奨。

タイリクバラタナゴの餌は？

Omnivore; quality prepared foods with variety。Dark fine gravel or sand上で採餌する性質を活かし、沈む餌も与える。

タイリクバラ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。

タイリクバラタナゴの原産地は？

朝鲜半岛のClear streams, rivers and still watersが生息地。

タイリクバラタナゴの繁殖は？

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