Betta Fish Complete Care Guide — Everything You Need to Know

Betta fish are sold in tiny cups, kept in vases, and given as fairground prizes. Most people think they're indestructible. They're not. They're actually sensitive fish that need proper care to thrive. But when given what they need, a betta can live 3-5 years and display incredible personality.

Tank size: minimum 5 gallons

A 5-gallon tank is the bare minimum for a betta. A 10-gallon is ideal. The tiny 1-gallon setups marketed for bettas are not appropriate — water quality crashes in hours and temperature swings cause chronic stress. A proper tank with a filter and heater means less maintenance, not more.

Water parameters

Temperature: 76-82°F (use a heater — bettas cannot regulate body temperature). pH: 6.5-7.5. Ammonia: 0ppm. Nitrite: 0ppm. Nitrate: under 20ppm. Bettas prefer soft, slightly acidic water similar to their native Thai habitat. Dechlorinate all tap water before adding to the tank.

Feeding bettas correctly

Bettas are carnivores — they need high-protein food. Feed: betta-specific pellets (2-4 small pellets twice a day), frozen bloodworms as a weekly treat, live brine shrimp occasionally. Never feed goldfish flakes — too much plant matter, not enough protein. Fast your betta one day per week to prevent constipation and bloat.

Signs of a healthy vs unhealthy betta

Healthy: bright colors, full flowing fins, active and curious, approaches the glass, eats eagerly. Unhealthy: clamped fins, faded color, lethargy, hiding at the bottom, refusing food, white spots (ich), torn fins (fin rot). Any negative sign = test your water immediately.