タイワンキンギョ (Macropodus opercularis)

科: Osphronemidae

タイワンキンギョは中国、ベトナム、ラオスに原生するやや攻撃的な肉食性の淡水魚（オスフロネムス科）。飼育難度は初心者向き程度です。

飼育条件

水温: 16–26 °C
pH: 6–8
GH硬度: 5–30 dGH
成魚の体長: 6–7 cm
最小水槽: 40 L
泳ぐ水層: All layers; surface air-breather
飼育難度: 簡単
性格: Territorial; males are aggressive to rivals
原産地: Southern China — Pearl & Yangtze basins

種の概要

One of the first tropical ornamentals ever kept, the Chinese paradise fish is a native labyrinth fish of southern China's rice paddies, marshes and slow ditches. Its accessory breathing organ lets it survive warm, stagnant, low-oxygen water where few other fish persist. Hardy and cold-tolerant, it is strikingly colored but territorial — a characterful centerpiece for a quiet, well-covered tank.

原生環境

生息地: Rice paddies, ditches and sluggish streams
水流: Still to slow
溶存酸素: Low-oxygen tolerant via labyrinth organ

レイアウトと設備

底床: Dark sand to deepen coloration
流木・石組: Driftwood and leaf litter for cover and tannins
水草: Dense and floating plants providing surface cover

性格・餌・混泳

群泳性: Solitary or a single pair — one male per tank
餌: Carnivore; live and frozen foods, quality flakes
おすすめの混泳相手: Fast mid-water deter fish — Stay out of its territory
Larger peaceful barbs — Too big to be bullied
Nerite snails — Ignored, safe algae crew
混泳しないほうがいい相手: Other male paradise fish — Fatal fighting
Betta splendens — Mutual aggression
Dwarf shrimp — Hunted and eaten
Long-finned fish — Fins get nipped

繁殖と注意点

雌雄の違い: Males are larger with longer, pointed, more colorful fins; females are duller and rounder
繁殖方法: Bubble-nest builder. The male constructs a surface nest, embraces the female beneath it, then tends the eggs and fry alone — remove the female after spawning to prevent aggression.

よくある質問

タイワンキンギョは飼育しやすい？

初心者でも安心。Semi-aggressive; one male per tank。Solitary, pairs or small groups。

タイワンキンギョの適水温と水質は？

16–26 °C が目安。急変を避け、Standard heater to hold the mid-range steadily。

タイワンキンギョの大きさと水槽サイズは？

成魚は約 4.7–6.7 cm。Upper; surface-oriented。最小 30 L の水槽。

タイワンキンギョの餌は？

Carnivore; quality prepared foods with variety; regular frozen or live foods。1日2回の少量給餌が理想的。

タイワンキンギョは混泳できる？

可能。Semi-aggressive; one male per tank。おすすめ：Amur False Gudgeon — Similar size and water needs, China-Bitterling — Similar size and water needs, Acanthorhodeus chankaensis — Similar size and water needs。Its own males — Territorial fighting, Long-finned fish — Prone to fin nippingとの混泳は避ける。

タイワンキンギョの原産地は？

东亚淡水水系のRice paddies and shallow wetlandsが生息地。

タイワンキンギョは飛び出す？

驚くと跳ねる。密閉ふたを。

タイワンキンギョの繁殖は？

繁殖：Bubble nester; 水温升至 26-28℃ 时雄鱼筑泡巢。雄鱼鳍条更长、体色更艳。