True caviar comes exclusively from sturgeon, a family of ancient fish with 26 living species. Under U.S. FDA labeling rules, the word “caviar” used alone refers only to salt-cured sturgeon roe. Eggs from any other fish can be sold as caviar, but the label must include the fish’s name (such as “salmon caviar” or “paddlefish caviar”). That distinction matters because the products you’ll find at different price points come from very different fish.
The Classic Sturgeon Species
Five sturgeon species account for most of the world’s caviar. Each produces eggs with distinct size, color, and flavor, which is why caviar menus read like a wine list rather than a single product.
Beluga is the most famous and most expensive. The beluga sturgeon can take 20 years or more to reach maturity, and its large, pearl-grey eggs have a buttery, creamy flavor. Wild beluga caviar from the Caspian Sea is illegal to import into the United States because the species is critically endangered, so any beluga you find stateside comes from farms outside the U.S.
Osetra (also spelled Ossetra or Oscietra) comes from the Russian and Persian sturgeon. It’s prized for medium-to-large eggs that range from golden brown to dark green, with a nutty, briny complexity. Osetra sturgeon mature faster than beluga, which makes them popular for crossbreeding programs in aquaculture. Golden osetra, where the eggs trend toward amber, is considered especially rare and typically costs more.
Sevruga comes from the stellate sturgeon, sometimes called the “starry sturgeon.” Its eggs are the smallest of the three Caspian classics but deliver a more intense, sharply briny flavor. Sevruga sturgeon mature relatively quickly, around seven years, which historically made this variety more accessible than beluga or osetra.
Sterlet is a smaller sturgeon species that produces delicate, fine-grained eggs. An albino variant of the sterlet is the source of Almas caviar, one of the rarest and most expensive caviars in the world. Almas eggs are pale gold to nearly white, with grains around 2.8 to 2.9 millimeters. Sterlet typically need eight or more years to mature before harvesting.
Farmed Sturgeon Driving Today’s Market
Wild sturgeon caviar has largely been replaced by farmed production. China now accounts for over 60 percent of the world’s farmed caviar, with France, Italy, and Germany also running significant operations. Three species dominate global aquaculture: white sturgeon at roughly 43 percent of production, Siberian sturgeon at 34 percent, and Adriatic sturgeon at 18 percent.
Siberian sturgeon became a farming favorite in France during the mid-1980s. French producers originally chose it as a substitute species to avoid harming their own native sturgeon populations, and it turned out to adapt well to controlled environments. White sturgeon, native to the Pacific coast of North America, became the backbone of Italian farming. Both species produce high-quality caviar that competes with traditional Caspian varieties at a fraction of the ecological cost.
If you buy caviar today, there’s a strong chance it comes from one of these farmed species regardless of where you live. The United States, UAE, and Japan are the world’s leading caviar importers.
How Egg Size and Color Affect Grading
Caviar grading depends heavily on which fish produced the eggs. Beluga and osetra yield the largest eggs, which are generally preferred for their distinct “pop” on the palate and luxurious texture. Sevruga eggs are smaller but pack more concentrated flavor. Across all species, uniformity matters: evenly sized, consistently colored eggs with a glossy, translucent sheen score highest.
Color ranges from pale gold to deep black depending on the species and the individual fish. Lighter colors, like golden osetra or albino sterlet, are rarer and command premium prices. Color alone doesn’t determine flavor, but it does affect market value and presentation.
Non-Sturgeon Fish Sold as Caviar
Several other fish produce roe that’s processed and sold under the caviar label, always with the fish name attached. These alternatives are far more affordable than sturgeon caviar and widely available.
American paddlefish is the closest relative of sturgeon still found in U.S. waters. Often called “spoonbill” for its distinctive flat snout, paddlefish produces small-to-medium eggs in shades of grey, brown, and olive green. The flavor is rich, earthy, and sharp, with a brininess frequently compared to Caspian sevruga. Paddlefish caviar is one of the best entry points if you want something that resembles true sturgeon caviar without the price tag.
Salmon roe is the large, bright-orange eggs familiar from sushi restaurants. These are significantly bigger than sturgeon eggs and burst with a distinctly fishy, briny flavor. Salmon roe is common in Japanese, Russian, and Scandinavian cuisines, and it’s usually sold at a fraction of sturgeon caviar prices.
Trout roe looks similar to salmon roe but smaller, with a milder, slightly sweet taste. It’s increasingly popular as a garnish in contemporary cooking.
Lumpfish roe comes from the lumpfish, a round, bottom-dwelling species from the North Atlantic. Lumpfish roe is one of the most common and affordable “caviar” products on supermarket shelves. The eggs are small, typically dyed black or red, and have a firm, crunchy texture. The FAO has studied lumpfish caviar production as a model for developing roe products from other species.
Capelin roe (sometimes labeled masago) comes from a small cold-water fish and is a staple in sushi. Capelin roe production was actually developed by lumpfish caviar producers in the 1990s as an extension of their existing processing methods. The tiny, crunchy eggs are often dyed bright colors and used as a topping or garnish.
What the Label Tells You
Because no official standard of identity exists for caviar in the United States, labeling rules are straightforward but worth understanding. If a jar simply says “caviar” with no other fish name, it should contain sturgeon roe. Any product made from another fish must name that fish in type that’s the same size and prominence as the word “caviar,” so you shouldn’t see “CAVIAR” in large letters with “paddlefish” in tiny print underneath.
The label also needs to list all ingredients in descending order by weight. Most caviar contains just roe and salt, but some products include color additives, especially cheaper lumpfish and capelin varieties. If artificial color has been added, that must appear prominently on the label. Checking the ingredient list is the simplest way to know exactly what you’re getting: a single-species, minimally processed product or something more heavily modified for the mass market.