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FishintermediateFreshwater

Strawberry Betta

Betta albimarginata

AnimaliaChordataActinopterygiiOsphronemidae

📍 Southeast Asia

Ask Finn

Betta albimarginata, the Strawberry Betta, is a small mouthbrooding wild betta from Borneo distinguished by its deep red body, white-edged fins, and the characteristic white lip border that gives it its species name. Males incubate eggs orally and are typically less aggressive than bubble-nesting bettas. They do best in densely planted species tanks or carefully managed community setups with non-nippy tankmates.

Size1.5"
Min Tank5g
semi-aggressive
Zonemid

Care Guide

Diet

Strawberry Bettas are strict carnivores requiring high-protein foods. Feed micro pellets, live or frozen daphnia, bloodworms, and mosquito larvae once daily in small portions. Occasional live foods stimulate natural hunting behavior and improve coloration.

Behavior

These mouthbrooding bettas are notably less aggressive than bubble-nesting species, though males will still defend territory. They are mid-water swimmers that prefer densely planted environments where they can establish small territories and retreat when stressed. Males display elaborate fin flaring and color intensification during courtship.

Breeding

Strawberry Bettas are paternal mouthbrooders, meaning males incubate eggs orally—a rare trait among bettas. Breeding in captivity is possible but requires careful conditioning, pristine water quality, and minimal disturbance. Fry are extremely small and require infusoria or liquid fry food before accepting micro foods.

Common Diseases

Fin Rot

Symptoms

Fraying, discoloration, or deterioration of fin edges; lethargy and loss of appetite

Treatment

Perform 25-50% water changes every 2-3 days, maintain pristine water quality, and treat with aquarium salt or antibacterial medication if severe

Ich (Ichthyophthirius)

Symptoms

White spots on body and fins, rapid gill movement, scratching against objects, lethargy

Treatment

Raise temperature gradually to 28-29°C, perform daily water changes, and treat with ich medication; ensure adequate aeration

Mouth Fungus

Symptoms

White or grayish growth around mouth and jaw area, difficulty eating, visible tissue damage

Treatment

Isolate affected fish, perform frequent water changes, treat with antifungal medication, and maintain excellent water quality

Velvet Disease

Symptoms

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

Treatment

Reduce light exposure, raise temperature to 28-29°C, perform daily water changes, and treat with copper-free velvet medication

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Quick Facts

diet
Carnivore – micro pellets, live/frozen daphnia, bloodworms, mosquito larvae
breeding
Paternal mouthbrooder
lifespan
3–5 years
max size
4 cm (1.6 in)
tank size
10 gallons minimum
temperament
Mildly aggressive toward conspecific males; generally peaceful

Water it likes

ph
5.0–7.0
ammonia
0 ppm
nitrate
<10 ppm
hardness
1–10 dGH
temperature
72–81°F (22–27°C)

Stats

Community tips0
Kept by0 hobbyists