Peaceful betta
Betta imbellis
FishFreshwater
Betta imbellis grows 5-6 cm. Males have shorter fins than Betta splendens, but metallic blue-green colors. Females are duller. It is a labyrinth fish, less territorial than its cousin. It can be kept in pairs or small groups in a specific tank. It is shyer and appreciates hiding spots. Breeding is similar with a bubble nest.
Recommended parameters
| Parameter | Recommended range |
|---|---|
| Temperature | 26–30 |
| pH | 5–6.5 |
| GH | 1–4 |
| KH | 0–3 |
| NO₃ | ≤ 10 |
| PO₄ | ≤ 0.2 |
Care
Difficulty3/5
Dietcarnivore
Min. tank40 L
Min. group2
Adult size6 cm
Lifespan3 ans
Temperamentpeaceful
Care notes
A minimum 40-liter aquarium for a pair. Temperature 26-30°C, pH 5.0-6.5, very low hardness. A setup with roots, catappa leaves, and shade plants is essential. Carnivorous diet. Compatible with other small peaceful blackwater fish (rasboras, small corydoras). Avoid aggressive species. Breeding is possible in a specific tank with soft acidic water.