What Feed Should You Give Your Fish? Pros and Cons of Different Fish Foods

1 Live Animal Feeds

Live animal feeds are rich in nutrients and protein, matching what ornamental fish need most. But they spoil easily and can carry parasites and bacteria, so they suit experienced keepers.

Common live feeds

Red worms (daphnia): cheap and loved by most fish, they are the top pick and the most common feed on the market.

Bloodworms: mosquito larvae with the highest nutritional value among live feeds. Fairly clean and easy to feed, but hard to keep in hot weather.

Tubifex worms: popular with fish, but they easily harbor parasites and rarely rinse fully clean, so long-term use is not advised.

Brine shrimp: usually fed as freshly hatched nauplii, very nutritious, but adults are less valuable and hard to buy.

2 Frozen Feeds

Frozen feeds are live feeds that are frozen or air-dried after processing. They keep most of their nutrition, are easier to feed than live food, and store well. Dried red worms and dried brine shrimp are good choices — freeze-drying kills parasites, making them safer, and dried brine shrimp is nutrient-rich, supporting protein, fat, and fiber intake while boosting color. They do lose some flavor, so picky fish may refuse them. Frozen brine shrimp is less nutritious but widely loved and can be mixed with other feeds. Frozen red worms are made by freezing live worms directly; they keep more nutrition but may carry parasites, so they are not the best choice.

3 Artificial Feeds

Artificial diets are the most recommended: varied, economical, easy to dose, and parasite-free. Many are formulated for specific fish tastes and needs, so they suit ornamental fish well.

Common artificial feeds

Growth flakes: over 40 nutrients and high protein, easy to digest — good for fry; safe for freshwater and marine fish.

Color-enhancing flakes: feed in moderation when a fish’s color fades to keep it bright and glossy.

High-protein flakes: add seaweed, brine shrimp, and plankton for extra protein — good for large tropical fish.

Vegetable flakes: for herbivorous fish, also fine in moderation for omnivores to avoid vitamin gaps.

Fry powder: fine powdered feed, nutrient-rich, for newly hatched fry.

High-protein sticks: float on the surface and barely foul the water, good for fish that feed at the top.

Choose feed by nutrition, size, and scent, and adapt to each fish’s preference — beginners can buy small amounts of several types to test. Keep things clean when feeding so parasites, bacteria, and viruses from the food do not pollute the water and harm your fish.