Pond fish pellets: what to feed and how much
Pond fish pellets are the dry, floating or sinking food made for goldfish, koi and other cold-water pond fish, rather than tropical aquarium species. The choice that actually matters is protein level and pellet type for the season, because a pond fish's ability to digest food changes hugely as the water temperature does, and getting that wrong causes more problems than the brand on the tub.
Floating or sinking, and why it matters
Floating pellets suit koi and larger goldfish that come up to feed, and they let you watch exactly how much is actually being eaten before it disappears. That visibility is genuinely useful for a beginner, because it turns feeding from a guess into something you can check.
Sinking pellets suit shier fish, or species that naturally feed lower in the water, but leftovers are much harder to spot. Uneaten sinking food rots on the pond floor out of sight, which is often the real cause of a pond that has started to smell or cloud without an obvious reason.
Protein and the season
Pond fish are cold-blooded, so their metabolism and digestion slow right down as the water cools. A lower-protein, easily digested pellet through spring and autumn and a higher-protein summer pellet through the warmer months is the standard approach most pellet ranges are built around, and it is worth following the pack's own seasonal guidance rather than sticking with one bag all year.
Once the water is consistently cold, most pond keepers stop feeding altogether, because a fish's gut all but shuts down at low temperatures and undigested food just sits and fouls the water instead of being used. Starting again gently in spring, rather than resuming a full summer ration overnight, gives the fish time to catch up.
How much to feed, and the mistake almost everyone makes
Overfeeding is by far the most common problem with pond fish, and it is rarely the fish that suffers first — it is the water. Leftover pellets break down and raise ammonia, which clouds the water and stresses every fish in the pond far more than one light meal would.
A simple check that works well: feed only as much as clears in a couple of minutes, and skip a day rather than top up if you are ever unsure. Persistent cloudy water or a sudden algae bloom is worth treating as a feeding question before anything more complicated.
Reading the pellet itself
Ingredient order matters here as much as it does in any pet food: fishmeal or another named protein near the top is a better sign than a pellet led by wheat or general cereal. Colour-enhancing pellets containing spirulina or paprika extract work by supporting a fish's own natural pigment rather than by dyeing them, which is a common misunderstanding worth clearing up.
Pellet size should match the fish doing the eating. A large koi pellet is genuinely difficult for a small goldfish to manage, and a food that is too big for a pond's smallest residents often ends up as the same overfeeding problem described above, just from a different cause.
What we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Tetra Goldfish Flakes
Complete goldfish flakes in several pack sizes, with a shared formula across the family
From£3.02
Tetra Goldfish Granules
Complete granules for goldfish, with a shared formula across both pack options
From£3.98
Tetra Prima Mini Granules
Slow-sinking granules for mid-water and bottom-feeding fish, blending herbivore and omnivore diets
£6.10
Tetra Aquasafe
A water conditioner that neutralises chlorine and heavy metals, with an added vitamin B mix
From£6.41
Tetra Pond Fish Food Variety Sticks
Complete Tetra Pond Variety Sticks in three colours, across four pack sizes
From£6.41
Tetra Koi Pond Fish Food Sticks
Complete fast-soaking Tetra Pond Koi Sticks, available in four pack sizes
From£6.41
Tetramin
Complete TetraMin flake food for ornamental fish, offered across several pack sizes
From£2.39
Tetra Temperate Flakes
Complete flakes for subtropical fish kept at 18–23°C, with vegetable ingredients
£6.99
Tetra Pond Fish Food Sticks
Complete fast-soaking Tetra Pond Sticks for pond fish, in seven pack sizes
From£4.77
Tetra Japan
Sinking dry pellets for fancy goldfish, with pack-specific label information shown clearly
From£4.56
Common questions
- How often should I feed pond fish?
- Once or twice a day in spring, summer and early autumn is typical, in an amount that clears within a couple of minutes. Little and often works better than one large feed, and it is always safer to feed slightly less than to leave uneaten pellets breaking down in the water.
- Do pond fish need feeding in winter?
- Most pond keepers stop feeding once the water is consistently cold, because a fish's digestion slows down so much that food is barely processed and simply pollutes the water instead. Feeding resumes gradually in spring as the water warms and the fish become active again.
- What's the difference between koi pellets and goldfish pellets?
- The two are often similar in ingredients but different in pellet size and sometimes protein level, since koi grow much larger and can manage a bigger pellet. A mixed pond of both species usually does fine on a pellet sized for the smaller fish.
- Can I feed my pond fish bread or kitchen scraps?
- It is best avoided. Bread swells in water, offers very little nutrition for a pond fish, and tends to be eaten fast without the fibre and protein balance a proper pellet provides. A dedicated pond food is a more reliable everyday choice.
Related
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.