Peaceful Betta
Betta imbellis
A calmer wild betta that, unusually, can sometimes be kept in groups.
| Difficulty | Beginner |
| Min. Tank Size | 30 L |
| Temperature | 24.0–28.0 °C |
| pH Range | 5.5–7.0 |
| Max Size | 5.0 cm |
| Lifespan | 2-3 years |
| Diet | Carnivore |
| Temperament | Peaceful |
Overview
The Peaceful Betta (Betta imbellis) is a calmer wild betta that, unusually, can sometimes be kept in groups. It is a popular choice among Australian aquarists, reaching around 5 cm and living roughly 2-3 years when properly cared for.
This complete guide covers how to keep the Peaceful Betta successfully - tank size and setup, water parameters, the best foods (including recommended brands), suitable tank mates, breeding, sexing and the health issues to watch for. It is rated Beginner to care for.
Natural Habitat & Origin
The betta is a labyrinth fish from the warm, still, shallow waters of Thailand - rice paddies, marshes and slow canals. These oxygen-poor waters explain its surface-breathing labyrinth organ and its dislike of strong current, so a warm, gently-filtered, planted tank suits it best.
Matching the temperature, water chemistry and cover a species evolved with is the simplest route to keeping it healthy and seeing its natural behaviour and colour.
Tank Size & Aquarium Setup
Provide a minimum of 30 litres for the Peaceful Betta. A roomy, well-decorated tank lets a pair settle and behave naturally.
Live plants, driftwood and shaded retreats give security and show off the fish's colours against a natural backdrop.
Always add fish only to a fully cycled, mature tank with stable biological filtration. Keep the flow gentle for this calm-water species.
Water Parameters
Keep the Peaceful Betta in stable water at 24-28 °C with a pH of 5.5-7.0. Soft, acidic water suits it best and is important for colour and breeding.
Test regularly: ammonia and nitrite must read zero, and nitrate should be kept low with routine partial water changes. Always dechlorinate and temperature-match new water, because sudden swings cause far more illness than water that is stable but slightly imperfect.
Diet & Feeding
The Peaceful Betta is a carnivore and needs a protein-rich, meaty diet.
In Australia, good options include Hikari Betta Bio-Gold, API Betta pellets and Dymax frozen bloodworm and brine shrimp. Feed small amounts once or twice a day (only what is cleared in a minute or two), vary the diet for the best colour and health, and avoid overfeeding, which is the leading cause of poor water quality.
Temperament & Tank Mates
The Peaceful Betta is peaceful and community-friendly. It mixes well with other calm species that share its temperature (24-28 °C) and pH (5.5-7.0) needs, are too large to be eaten and not large enough to eat it.
Breeding
The Peaceful Betta is a bubble-nest builder. The male builds a raft of bubbles at the surface, entices the female beneath it, then guards the eggs and fry himself.
Even if you are not planning to breed it, recognising this behaviour helps you understand what you are seeing and respond well - for example by adding cover for fry or giving a guarding pair extra space.
How to Tell Males from Females
Male bettas have long, flowing fins and intense colour, while females are shorter-finned, generally plainer, and show a small white egg spot when mature.
Common Health Problems
Like most aquarium species it can suffer from white spot (ich), fin rot and fungal or bacterial infections, almost always triggered by stress or poor water quality. Quarantine new arrivals for 2-4 weeks and watch daily for early signs such as loss of appetite, unusual hiding, clamped fins or laboured breathing - caught early, most issues are very treatable.
Prevention beats cure: keep water pristine, avoid overstocking and overfeeding, quarantine new arrivals, and act at the first sign of trouble.
Is the Peaceful Betta Right for You?
The Peaceful Betta suits beginners and experienced keepers alike, as long as you can provide at least 30 litres, water at 24-28 °C and pH 5.5-7.0, the right diet and suitable tank mates.
Meet those needs and the Peaceful Betta will reward you for around 2-3 years. Use our free aquarium calculators to plan your setup, and explore our other fish, plant and disease guides to build a thriving aquarium.
