観賞魚（熱帯魚各種）の育て方・育成ガイド
Pisces (tropical freshwater community fish) · Characidae, Poeciliidae, Osphronemidae, etc.
観賞魚（熱帯魚各種）（Pisces (tropical freshwater community fish)）はアクアリウム生体です。 Characidae, Poeciliidae, Osphronemidae, etc.科に属します。 原産地はNeon tetra: upper Amazon (W Brazil, E Peru, SE Colombia); guppy: NE South America & the southern Caribbean; betta: central Thailand to the Malay Peninsulaです。 光量は水草の影を配した穏やかな照明を必要とします。 適正水温：Species-dependent, typically 22°C – 28°C (neon tetra 21–25°C, guppy 17–28°C, betta 22–30°C)。 適正pH：Species-dependent: neons do best in soft, acidic water (about 4 – 7.5); guppies in hard, alkaline water (7 – 8.5)。 育成難易度：Easy。 生長速度：guppies are livebearers and breed readily; tetras and bettas need dedicated breeding setups。
観賞魚（熱帯魚各種）の育て方・育成方法は？
| 光量 | 水草の影を配した穏やかな照明 |
|---|---|
| CO₂ | 酸欠（低酸素症）を防ぐため、CO₂濃度は 30 ppm 未満を維持 |
| 水温 | Species-dependent, typically 22°C – 28°C (neon tetra 21–25°C, guppy 17–28°C, betta 22–30°C) |
| pH | Species-dependent: neons do best in soft, acidic water (about 4 – 7.5); guppies in hard, alkaline water (7 – 8.5) |
| 配置 | Midwater (tetras, guppies), upper water (betta) |
| 生長速度 | Guppies are livebearers and breed readily; tetras and bettas need dedicated breeding setups |
| 難易度 | Easy |
| 科名 | Characidae, Poeciliidae, Osphronemidae, etc. |
観賞魚（熱帯魚各種）のトリミングや増やし方は？
Feed 1–2 times daily (consumed in 2 mins); siphon uneaten food. Only add fish to a cycled tank (ammonia and nitrite undetectable).
観賞魚（熱帯魚各種）によくあるトラブルや病気は？
White spot (Ich): 0.5–1 mm white specks on body and fins, cycle 3–6 days at 24–26°C; gasping and sudden deaths in a new tank from ammonia/nitrite before the biofilter is established; neons with white patches swimming apart (possible neon tetra disease); weak, short-lived guppies from inbred mass-produced stock.
観賞魚（熱帯魚各種）のトラブルや枯れへの対処法は？
Treat Ich repeatedly (at least 3–5 treatments until losses stop): salt at 4–5 g/L for 7–10 days or formalin per label; remove carbon and aerate well. Heat is not a cure — warm water only speeds the parasite's cycle so treatments must be more frequent, and 29–30°C is above the neon tetra's range; salt also harms plants and scaleless fish. Quarantine new fish for 30 days; in a new tank test weekly, change water, feed less and stock slowly.
観賞魚（熱帯魚各種）の原産地や生息地は？
Neon tetra: upper Amazon (W Brazil, E Peru, SE Colombia); guppy: NE South America & the southern Caribbean; betta: central Thailand to the Malay Peninsula
観賞魚（熱帯魚各種）を購入する前に知っておくべきことは？
Never release aquarium fish — guppies and bettas have established feral populations outside their range. Copper-based medications are lethal to shrimp and snails.
出典
- Paracheirodon innesi — Seriously Fish
- Poecilia reticulata — Seriously Fish
- Betta splendens — Seriously Fish
- Ichthyophthirius multifiliis (White Spot) Infections in Fish — UF/IFAS Extension
- Ammonia in Aquatic Systems (FA16) — UF/IFAS Extension
育成情報は 2026-09-23 にこれらの出典と照合しました。
観賞魚（熱帯魚各種）を使った3Dレイアウトを見るには？
- 禅の渓流と仏壇 — パルダリウム
- 岩山の滝 — パルダリウム
- 岩組トライアド — アクアリウム
- 自然の美 — アクアリウム
- ワイルド・サウンド — アクアリウム
- ハロン湾のミニチュア — アクアリウム
- 流木と石 (Ryuboku) — アクアリウム
- ブラックウォーター ビオトープ — アクアリウム
最終更新日： · インタラクティブ3Dガイドを開く · すべての水草・生体ガイド一覧