By Alex Beleaev | Beleaev Caviar & Gourmet | beleaev.com
Put lumpfish roe in a tin marked "caviar" and, legally, you have mislabelled the tin.
Caviar means salt-cured roe from one family of fish only: the sturgeon. Salmon, lumpfish and trout roe are not caviar, whatever the label on the shelf might imply. Five sturgeon species make up almost the entire market you will ever meet, and which one is in the tin decides the grain, the flavour and a good part of the price before a spoon goes anywhere near it.
Five species carry the whole market. Here is what separates them.
Key Takeaways
- True caviar comes only from sturgeon (family Acipenseridae)
- Sturgeon are ancient fish; fossil records stretch back over 200 million years
- Five species dominate the market: Beluga, Kaluga, Oscietra, Sevruga and Baeri
- Females take 7 to 25 years to mature, which is why caviar costs what it does
- Salmon and trout produce roe, not caviar
A fish that predates most of the animal kingdom
The sturgeon is one of the oldest fish still swimming, with fossil records stretching back more than 200 million years. It has bony plates instead of scales, a shark-like tail, and whisker-like barbels it drags along the riverbed to find food. There are about 27 species worldwide, and nearly all of them are now protected, which is why legal caviar today comes from certified farms rather than wild rivers.
A female sturgeon does not produce eggs on a yearly schedule the way a salmon does. Depending on species, she needs between 7 and 25 years to mature. That patience is built into every price tag, and it is also why only five of those 27 species carry the entire commercial market.
The five species that produce almost every tin sold
Beluga (Huso huso)
The largest sturgeon and the source of the most prized caviar. Eggs reach 3.0-3.5mm with a buttery, creamy character. Females mature in 15-20 years, sometimes 25. Try it: Beluga Reserve Caviar.
Kaluga (Huso dauricus)
Beluga's river cousin from the Amur basin. Large eggs and a remarkably similar rich profile; well-established farming keeps prices friendlier.
Oscietra (Acipenser gueldenstaedtii)
The connoisseur's choice. Medium eggs with a nutty, layered flavour that changes from tin to tin. Matures in 8-12 years. Try it: Oscietra Royal Caviar.
Sevruga (Acipenser stellatus)
The smallest-grained of the historic big three, with an assertive, briny intensity. Matures in 7-10 years.
Baeri (Acipenser baerii)
The Siberian sturgeon. Mild, buttery, the natural starting point for newcomers. Try it: Royal Baeri Caviar.
Five names, five grains, five prices. What none of them share a shelf with, whatever the label might suggest otherwise, is salmon.
Why salmon roe and trout roe never earn the name
They all produce roe, and good roe at that. Salmon ikura is excellent on rice; trout roe brightens a blini. But none of it is caviar. If a label says "caviar" without naming a sturgeon species, read it twice. Our guide to caviar vs fish roe covers the differences in detail.
That naming rule exists because wild sturgeon nearly disappeared, and everything sold legally today answers to it.
How certified farms rescued a fish and a delicacy
Wild sturgeon populations collapsed in the late twentieth century, and international CITES rules now govern every legal tin. Modern aquaculture rescued both the fish and the delicacy: today's certified farms raise sturgeon in controlled water, harvest to strict standards, and document every batch. Every Beleaev tin is CITES certified and traceable to its farm.
Five species, one certificate behind each of them: what is left to settle is which grain suits your table, and that is a question a spoon answers faster than a page of tasting notes ever will, the Oscietra's nutty finish giving way slowly, the Baeri's beads breaking soft and mild against the tongue.
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Oscietra Royal Caviar · rich, buttery, our signature (from £48) · Royal Baeri Caviar · gentle, creamy, the perfect first tin (from £37) · see the full caviar collection
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Frequently Asked Questions
Is caviar always from sturgeon?
By the strict trade definition used in Europe, yes. Only salt-cured sturgeon roe may be sold simply as "caviar". Roe from salmon, trout or lumpfish must name the fish on the label.
How many sturgeon species are there?
Around 27 worldwide. Only a handful are farmed for caviar at scale: Beluga, Kaluga, Oscietra (Oscietra sturgeon), Sevruga and the Siberian Baeri.
Why do sturgeon take so long to produce caviar?
Females must reach full maturity before the roe is ready, which takes 7 to 25 years depending on species. The fish is also large and slow-growing, so farms carry years of cost before a single harvest.
Is wild caviar still sold?
Legally, almost never. Wild sturgeon are protected under CITES, and the legitimate market is farmed. Certified farming is the reason caviar still exists at all.
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