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FishintermediateFreshwater

Peaceful Betta

Betta imbellis

AnimaliaChordataActinopterygiiOsphronemidae

📍 Southeast Asia

Ask Finn

Betta imbellis is aptly named — unlike the highly aggressive Betta splendens, this species is notably peaceful toward conspecifics and can sometimes be kept in pairs or even small groups in heavily planted, well-structured tanks. Males display subtle but attractive blue-green iridescent scales and red fin edging. It prefers very soft, peat-filtered water replicating its native blackwater rice paddy habitat in Malaysia.

Size2.5"
Min Tank10g
peaceful
Zonemid

Care Guide

Diet

Betta imbellis are carnivorous and thrive on high-protein foods including quality betta pellets, bloodworms, daphnia, and mosquito larvae. Feed small amounts once daily, offering only what can be consumed in 2-3 minutes to prevent overfeeding and water quality issues. Vary their diet weekly to ensure nutritional balance and maintain vibrant coloration.

Behavior

Unlike their aggressive cousins, Peaceful Bettas are notably docile toward conspecifics and can sometimes coexist in pairs or small groups in heavily planted tanks with adequate space and hiding spots. Males display subtle blue-green iridescence with red fin edging, particularly when establishing territories or during courtship. They are mid-water swimmers with moderate activity levels, preferring densely planted environments that mimic their native blackwater habitat.

Breeding

Breeding Betta imbellis in captivity is possible but requires careful conditioning and ideal water parameters (soft, acidic water at 26-28°C). Pairs should be introduced gradually in a heavily planted breeding tank; males may build bubble nests and females will display vertical stripes when receptive. Fry are small and require infusoria or liquid fry food initially, making breeding moderately challenging for intermediate aquarists.

Common Diseases

Fin Rot

Symptoms

Frayed, discolored, or deteriorating fin edges; lethargy and loss of appetite

Treatment

Perform 25% water changes every 2-3 days, maintain pristine water quality, and treat with aquarium salt (1 tsp per 5 gallons) or antibacterial medication if severe

Ich (White Spot Disease)

Symptoms

Tiny white spots on body and fins, scratching against objects, rapid breathing

Treatment

Raise temperature gradually to 28-30°C, increase aeration, and treat with ich medication or salt; perform daily water changes

Velvet Disease

Symptoms

Fine golden or rust-colored dust on body, clamped fins, rapid gill movement, lethargy

Treatment

Dim lighting, raise temperature to 28-30°C, and treat with copper-based medication or salt; isolate if possible

Bacterial Infection

Symptoms

Open sores, cloudy eyes, swollen belly, torn fins, or discoloration

Treatment

Perform frequent water changes, maintain excellent water quality, and use broad-spectrum antibacterial medication; isolate in a hospital tank if severe

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Tanks keeping this 🐟

Kept by 5 hobbyists

Community tanks featuring Peaceful Betta.

Quick Facts

diet
Carnivore – betta pellets, bloodworms, daphnia, mosquito larvae
lifespan
3–5 years
max size
6 cm (2.4 in)
tank size
10 gallons minimum; larger for pairs
temperament
Semi-aggressive; less aggressive than B. splendens; pairs possible with care

Water it likes

ph
5.0–7.0
ammonia
0 ppm
nitrate
<10 ppm
hardness
1–8 dGH
temperature
75–82°F (24–28°C)

Stats

Community tips0
Kept by5 hobbyists