Freshwater
Crescent betta
Betta imbellis
Osphronemidae, Macropodusinae
Facts
Characteristics
- Length
- Up to 6 cm
- Body shape
- Streamlined
Care
- Group
- Missing
- Smallest aquarium
- 8 liters
- Diet
- Missing
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Behavior
- Temperament
- Semi-aggressive
- Swims
- Missing
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Water values
Smallest tank
8 liters30 × 15 × 18 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 Indonesia, Malaysia, and Thailand.
Introduced to Singapore.
Videos
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
Revealing the Life of Betta Fish in Their Natural Habitat
Rodrigo SilvaAug 25, 2023
Bettas in the wild - Betta imbellis in native habit!
Rodrigo SilvaAug 21, 2023
More about the species
About the species
Occurs usually in stagnant pools and ditches in clear to brown water. Found also in lowland swamps and paddy field. Bubble nest builder species. Eggs shrink to the bottom and were then collected by one or both parents and were embedded among the foam bubbles in the nest.
Source: FishBase
Other names
In other languages
- Fredelig kampfisk
- Fredlig kampfisk
- Lille kampfisk
- Purppurataistelija
- Malay Fighting Fish, Peaceful 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.