Which food for pond fish? Flakes, sticks or pellets by species

Not all pond foods are equal, and a food suited to one species can be useless, or even harmful, for another. A sturgeon will never eat a floating flake, and a goldfish fed large koi pellets will leave half of them to rot on the bottom. Here is how to choose.

Flakes, sticks, pellets: what is the difference?

• Flakes suit small and young fish. They break up quickly, so avoid them in a large pond where they scatter.
• Sticks float for a long time and swell. Handy for goldfish and for seeing what gets eaten.
• Floating pellets are the staple food for koi. Choose a diameter close to the size of the mouth.
• Sinking pellets are meant for bottom-feeding fish, especially sturgeon.

A mix of several forms is a good solution in a pond that hosts several species: each fish finds its share at the surface or on the bottom.

The case of sturgeon

Sturgeon feed slowly on the bottom and have no stomach suited to starch-rich foods. A sturgeon fed only on koi food eventually wastes away. It needs a dedicated sinking pellet, ideally given in the evening when the other fish are less active.

Native fish

Ide, minnows, gudgeon and rudd have small mouths and live in shoals. They need a fine food that the large fish do not gobble up before them.

Also worth reading

For goldfish in particular, read What food for my goldfish in an outdoor pond?.

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How much to feed?

Overfeeding is the leading cause of green and cloudy water. Uneaten food breaks down, feeds algae and loads the filter.

• Give a small amount, watch, and stop when the fish slow down.
• Remove whatever is left after 5 minutes.
• Several small meals are better than one large one.
• Adjust to the temperature: cut back sharply below 10 to 12 °C.

A feeding ring keeps floating food in one place: it does not drift into the skimmer and you can see straight away what is left.

Also worth reading

For the right day-to-day habits, see How do you feed pond fish properly?.

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Matching the food to the water temperature

The right food also depends on the time of year. Fish have no fixed body temperature: their digestion follows the water temperature. A food that is perfect in July is poorly digested in October, and then ends up as waste in the filter. Trust the thermometer rather than the calendar.

To go further on meal timing, read when to feed pond fish.

Feeding a pond with several species

In a mixed pond, the fastest fish eat first. So you need to organise feeding so that every fish gets its share.

1. Start at the surface: give the floating food at one end of the pond to draw the koi and goldfish there.
2. Serve the small ones next: scatter a fine food at the other end for the native fish.
3. Keep the bottom for the evening: give the sinking pellets when the others are less active.
4. Watch the shyest fish: a fish that is losing weight is not getting its share, even if all the food seems to be gone.

The trickiest case remains sturgeon, which we cover in detail in our guide to sturgeon in ponds.

Read the label before you buy

• Ingredients: the first ingredients matter most. Prefer a quality protein source over a food based mainly on cheap cereals.
• Size: the diameter should match the mouth of the smallest fish you are feeding.
• Buoyancy: it should suit the zone where the species feeds.
• Pack size: a small bag finished within the season is better than a large bag that loses its vitamins.

Frequently asked questions

— Can I give my fish bread?

No. Bread swells, breaks down quickly and pollutes the water, without providing what fish need.

— How long does opened food keep?

A few months, kept dry and away from heat. Vitamins degrade once opened: buy a pack size you will finish within the season.

— Don't my fish need feeding in a large pond?

In a large, lightly stocked and well-planted pond, the fish find part of their food themselves. In a typical garden pond, supplementary feeding is still needed in season.

In summary

• Flakes and sticks for small fish, pellets for koi.
• Dedicated sinking pellets for sturgeon.
• Fine food for native fish.
• No more than is eaten in 3 to 5 minutes.

Last updated: 28 September 2026.