Betta Fish Care: Tank Setup, Feeding & Health

Bettas are the most misunderstood fish in the hobby. They're sold as "low-maintenance bowl fish" - but they're actually tropical fish with real needs. Get the setup right and they'll reward you with years of personality.

The minimum tank size debate

The old advice was a 1-gallon bowl. Modern keepers agree: a betta needs at least 5 gallons (20 litres), filtered and heated. They're territorial, but they're also active swimmers who use every inch of space. Bigger tank = healthier, happier betta.

The essential setup

• 5+ gallon tank with a lid (bettas are jumpers)
• Heater: 26-28°C (78-82°F) - they're tropical
• Gentle filter - bettas hate strong current; use a sponge filter or baffle
• Lights on a timer, about 8 hours a day
• Live plants (Anubias, Java fern) for hiding spots and calm
• Cycle the tank before adding the fish - same as any aquarium

Feeding

• Feed 2-3 small pellets or a few flakes, 1-2x a day
• High-protein foods: bloodworms and brine shrimp as treats
• Fast one day a week - prevents bloat
• Bettas will overeat anything you offer; portion control is yours

Health watch

• Fins clamped to the body = stress or illness
• White cottony spots = fungus; fuzz on mouth = columnaris
• Fin rot: ragged fins with dark edges - fix with clean water first
• Ich: white salt-grain dots - raise temp slowly + treat
• Clean water prevents 90% of betta diseases - weekly 25-30% changes

Give a betta a heated, filtered 5-gallon home and they transform from a "fish that survives" to a colorful, interactive personality. It's one of the easiest upgrades in pet care.