Sturgeon in a pond: which species to choose, what kind of pond to plan for, and how to feed it without losing it
With its elongated snout, barbels and rows of bony plates, the sturgeon looks as though it has come from another era. In fact, it has: this group of fish already existed in the time of the dinosaurs. Many enthusiasts dream of seeing one patrol the bottom of their pond. But the sturgeon is also the pond fish that is least forgiving: the wrong species, an unsuitable pond or food that does not sink, and it will waste away without anyone noticing.
— The short answer
For a garden pond, choose the sterlet (Acipenser ruthenus), the smallest of the common sturgeons. Forget the beluga, which can exceed several metres. Provide a large pond with clear bottoms and no recesses, cool and highly oxygenated water, and grilles on all intakes. Feed it special sinking sturgeon food, preferably at the end of the day, in small quantities suited to the temperature.
Which species for a garden pond?
| Species | Adult size | For a garden pond? |
|---|---|---|
| Sterlet (Acipenser ruthenus) | The smallest of the common species, often around one metre at most | Yes, in a large pond |
| Siberian sturgeon (A. baerii) | Significantly larger | Only in a very large pond |
| Various hybrids | Highly variable, often large | Avoid unless the species is guaranteed |
| Beluga (Huso huso) | Several metres in the wild | No |
The beluga is Europe's largest freshwater fish and one of the largest in the world. Seeing it sold in a small size at a pet shop does not change its adult size. Buying a sturgeon without knowing exactly which species it belongs to is a risky gamble for a garden pond. All sturgeon species are listed in CITES Appendix II: buy farmed fish from a seller able to provide information about their origin.
The ideal pond for a sturgeon
- A large volume and, above all, a large clear bottom area: the sturgeon constantly swims along the bottom and walls.
- No recesses or obstacles: sturgeons swim very poorly backwards and can get stuck in a corner, between stones, or in dense plants.
- Grilles on all intakes: bottom drain, skimmer, pump. A sturgeon sucked against an unprotected grille cannot always free itself.
- A soft bottom: a smooth liner or sand, not sharp gravel.
- Cool, highly oxygenated water: sturgeons do not tolerate the warm, oxygen-poor water of summer well.
AquaOxy 1000 - Oase
Aeration kit to keep the water rich in oxygen, essential when keeping sturgeons. Live pricing and immediate add to cart:
What does a sturgeon eat in a pond?
In the wild, it searches the bottom for insect larvae, worms, small crustaceans, and mollusks, detecting them with its barbels. Its mouth is located beneath its head: it cannot feed at the surface. In a pond, natural prey is never enough. It needs specially formulated food, rich in protein and suitable fats, that sinks quickly.
Sera Pond Stör Perlets 1,000 ml
Sinking pellets formulated for sturgeons' needs. Live pricing and immediate add to cart:
How much and when?
The classic problem is keeping them with koi or goldfish: they intercept the food before it reaches the bottom, and the sturgeon goes hungry without anyone noticing. A few rules:
- Feed at the end of the day, at dusk, when the other fish are less active and the sturgeon hunts.
- Distribute the food in a fixed spot away from the bottom, so it learns to find it.
- Feed small amounts at a time and check the next day that no pellets remain on the bottom.
- Adjust to the temperature: reduce portions when the water cools, and stop feeding when it is very cold.
- Watch their body shape: a sturgeon with a sunken belly and a head that appears too large is not eating enough.
Aqua-Ki Brown Medium 4-5 mm, 10 L
Large-format food for sturgeons, for ponds that house several of them. Live pricing and immediate add to cart:
Six things to know about this prehistoric fish
- Its skeleton is largely cartilaginous.
- Its bony plates, the scutes, form rows along its body.
- Its barbels are true food detectors.
- It lives for a very long time: several decades for most species.
- Wild sturgeons are among the most endangered fish in the world, hence their international protection.
- It does not tolerate some common pond fish treatments well: always check compatibility in the instructions before treating a pond that contains one.
Sturgeon food, aeration and protective grilles: ask us for advice before welcoming your first sturgeon; we will check with you that your pond is suitable.
Frequently asked questions
— Can a sturgeon live with koi?
Yes, in a large pond, provided you ensure that it gets its share of food on the bottom, for example by feeding it at dusk.
— How deep should a sturgeon pond be?
Sufficient depth to keep the water cool in summer and ice-free in winter, with above all a large area of clear bottom.
— Does the sturgeon spend the winter outdoors?
Yes, the sterlet is hardy. It slows down and eats very little when the water is cold.
— Why is my sturgeon losing weight?
Most often because the other fish eat its food before it reaches the bottom. Change the feeding time and location, and use food that sinks quickly.
In summary
- Sterlet yes, beluga no.
- Large pond, clear bottom without nooks and crannies, grilles over the suction inlets.
- Cool, highly oxygenated water.
- Special sinking sturgeon food, given at dusk in small quantities.
Sources and references
- Kottelat M. and Freyhof J., Handbook of European Freshwater Fishes, 2007
- CITES Convention, listing Acipenseriformes in Appendix II
- Aquiflor / Foudebassin consulting experience, Nodebais (Belgium)
Last updated: September 28, 2026.
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