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AI illustration of Betta dennisyongi, complete left-facing side view

Betta dennisyongi

Betta dennisyongi

A continuous black stripe runs from behind the eye to the gill-cover edge, with a broad triangular black patch below the eye.

A continuous black stripe runs from behind the eye to the gill-cover edge, with a broad triangular black patch below the eye. A small mouthbrooder.

Adult length
Up to 3.6 cm (standard length, without the tail fin)
Water temperature
22–27 °C
pH
5–7
Hardness
1–5 dGH
Natural habitat
Inhabits lowland hill streams and acidic swamps with clear to brown water, in secondary forest, plantations and farmland.

Often exported in mixed batches with B. rubra, so hybridization is a risk. Identify by head markings and breed separately.

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Appearance and identification

Males are less red than B. rubra, with wider spaces between black bars.

Social behaviour and territory

Prefer a single pair, with a 45×30 cm footprint. Persistent chasing by dominant fish occurs in groups.

Diet and feeding

Try suitably sized dry food, alternating with live or frozen foods such as Daphnia and brine shrimp. Feed small portions and avoid overfeeding.

Sources

www.fishbase.se ↗ 2026-10-25

www.seriouslyfish.com ↗ 2026-10-23

PeekFish · Ornamental fish

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