Freshwater
Penang betta
Betta pugnax
Osphronemidae, Macropodusinae
Facts
Characteristics
- Length
- Up to 6.7 cm
- Body shape
- Streamlined
Care
- Group
- Missing
- Smallest aquarium
- 12 liters
- Diet
- Missing
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Behavior
- Temperament
- Semi-aggressive
- Swims
- Missing
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Water values
Smallest tank
12 liters34 × 17 × 21 cm · For one fish
Worked out from its length, as we don’t yet know what size tank it should have. Do you? Sign up and tell us in the app.
Try other measures in the appNativeIntroduced
Lives wild in Cambodia, Indonesia, Malaysia, Singapore, Thailand, and Vietnam.
Introduced to Guam.
Videos
All the fish species that I found in this stream inThailand! #wildbetta #betta #freshwaterfish
Rodrigo SilvaJul 11, 2026
Snorkeling with 3 Wild Betta Species in Thailand | EP 3 Betta in the Wild
Rodrigo SilvaJun 18, 2026
The Endangered Fish of Thailand’s Peat Swamps and Forest Streams | EP 2 Betta in the Wild
Rodrigo SilvaMay 29, 2026
Snorkeling with Wild Betta and Finding a Mysterious Population | EP 1 Betta in the Wild
Rodrigo SilvaApr 5, 2026
More about the species
About the species
Occurs in small fast flowing forest streams. Inhabits mainly overhanging bank vegetation, submerged leaf litter and exposed roots of bank vegetation. Mouth brooder.
Source: FishBase
Other names
Other scientific names
- Betta anabatoides
- Betta brederi
- Betta fusca
- Betta macrophthalma
- Betta picta
- Betta rubra
In other languages
- Munnrugende kampfisk
- Mundrugende kampfisk
- Marmoritaistelija, Helmitaistelukala, Timanttitaistelija
- Forest betta, Malayan betta
Articles
All articles
Fin rot and columnaris4 min read
Bacteria that attack the fins, mouth and skin, nearly always after poor water. When water changes are enough, and when more is needed.
Velvet and dropsy4 min read
Velvet is a fast-moving parasite. Dropsy is a sign that something is seriously wrong inside the fish. How to recognize them, and what you can do.
How to set up an Asian aquarium5 min read
Two aquariums from Southeast Asia: calm forest streams and peat swamps with soft, brown water, and fast mountain streams with cool, oxygen-rich water.
How to add new fish4 min read
From the store to the tank: how to get the fish used to your water, why you should add only a few at a time, and what to watch for in the first few days.