Betta albimarginata

Brick-red males with broad black-and-white fin bands.

Displaying males are brick-red with broad white outer and dark inner fin bands.

Length and basis: 3 cm SL · source observation
Reference temperature: 23–28 °C
Captive lifespan: Unknown (no verified lifespan adopted)
pH: 4–6.5 (source care reference)
Hardness: 1–5 dGH (source care reference)

Prefer soft-acidic specialist care; vigorous feeders may intimidate it. Care reference: 23–28°C, pH 4.0–6.5, 1–5 dGH; low carbonate hardness, shade and gentle flow.

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Appearance and identification

Mature males have broader heads and stronger colour; females are plainer. A secure cover, humid air gap and surface access are essential.

Social behaviour and territory

Pairs or small groups are possible; avoid disturbing mouthbrooding males.

Compatibility limits

Prefer soft-acidic specialist care; vigorous feeders may intimidate it.

Space requirements

Source suggests a 45 × 30 cm base for a pair or small group, without a maximum count.

Aquarium environment

Use shade-tolerant plants, floating cover and wood for shelter; keep dim light, gentle flow and surface access.

Diet and feeding

Small live/frozen foods plus accepted dry foods; avoid overfeeding.

Measurement notes and sources

Source-listed standard length 3 cm, excluding the tail; statistic unspecified. Typical adult TL unknown.