How Often Should You Feed Aquarium Fish?
Overfeeding is the most common beginner mistake.
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Less than you think
Feed once or twice a day, only what the fish finish in about two minutes. A fish's stomach is tiny — most aquarium fish are overfed, not underfed.
Overfeeding fouls water
Uneaten food rots, spiking ammonia and feeding algae and pest snails. If you see leftover food on the substrate, you fed too much.
Variety and fasting
Mix quality flakes or pellets with occasional frozen or live foods. A weekly fasting day is healthy and helps prevent bloat in many species.
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FAQ
How much should I feed my fish?
Only what they finish in about two minutes, once or twice a day. When in doubt, feed less — overfeeding pollutes the tank.