Canned Fish Labels: Wild vs Farmed, Species Name, Oil vs Water, Sodium and Sustainability Marks

A can of fish packs a lot of label into a small space: a “wild” or “farmed” line, a fish name that may or may not include the species, the liquid it is packed in, a sodium number, and sometimes a sustainability logo. Some of these are set by federal rules, some by a certifier, and some are simply the brand describing its own product. This explainer goes through each one, using Wild Planet Wild Sardines in Extra Virgin Olive Oil with Lemon as the worked example. For the Nutrition Facts panel itself, start with our guide to reading a nutrition facts label.

How we wrote this: the product details come from the ingredient list, Nutrition Facts panel and sourcing text on the Wild Planet product page, read in October 2026. The rules come from the USDA country of origin labeling rule for fish, 7 CFR Part 60, the FDA sodium claim rule, 21 CFR 101.61, the canned tuna standard, 21 CFR 161.190, and the FDA Seafood List. We did not taste or test any product. This page explains what the label says; it makes no claims about fish and health.

Wild or farmed: who requires that word?

At the fish counter, the USDA requires two pieces of information for fish and shellfish: the country of origin and the method of production, meaning wild and/or farm-raised (7 CFR 60.200). That rule has an important exclusion. It does not apply when the fish is an ingredient in a “processed food item”.

The definition in 7 CFR 60.119 counts cooking and smoking as processing, and its list of excluded examples names canned tuna, canned sardines and canned salmon outright. So the wild or farmed statement you see on a can is not something this USDA rule makes the brand print. When a can says “wild”, treat it as the brand’s own description and look for supporting detail nearby, such as a named fishing area or method.

In our example, Wild Planet calls the fish “wild sardines” and adds that they come from the North Pacific Ocean, from fisheries in Japan. That is useful context, and it is the brand’s statement rather than a government label.

The species name and the market name

Many fish names on a can are market names, not species. The FDA Seafood List is the agency’s guide to acceptable market names for seafood sold in the U.S. For the two species in our example, it gives the same options:

• Sardinops sagax: acceptable market name “Pilchard” or “Sardine”; common name Pacific Sardine.
• Sardinops melanostictus: acceptable market name “Pilchard” or “Sardine”; common name Japanese Pilchard.

That means “sardines” on the front tells you the market name, not which fish is inside. Several different species can share it. If you care which one you are buying, look for the Latin name in the ingredient list or on the brand’s site. Wild Planet lists its ingredient as “Sardines (Sardinops sagax or Sardinops melanostictus)”, so the can may contain either of the two. An “or” like this is common when a brand sources from more than one stock.

Oil, water and what else is in the can

The packing liquid is part of the food, so it shows up in the ingredient list in order of weight, like every other ingredient. Canned tuna is the one canned fish with a detailed federal standard of identity. Under 21 CFR 161.190, canned tuna may be packed in only three media: an edible vegetable oil other than olive oil (or a mix without olive oil), olive oil, or water. A water pack adds “in water” to the name, and an oil pack has to name the oil used.

For other fish, read the ingredient list to see exactly which oil it is. “Olive oil” and “extra virgin olive oil” are different grades, and “vegetable oil” or “sunflower oil” are different again. Our olive oil label explainer covers what the grade names mean on a bottle.

Wild Planet’s list reads: sardines, organic extra virgin olive oil, water, lemon, sea salt, aqueous natural smoke. Two details stand out. Water appears as well as oil, so the can is not oil alone. And “aqueous natural smoke” is listed, which is how the brand describes the smoky note. Oil-packed fish also tends to carry more fat and calories than the same fish in water, so compare the panels if that matters to you.

Sodium per can

Salt is a common ingredient in canned fish, so the sodium line is worth a look. Start with the serving size. Wild Planet lists a serving size of 3 oz (85 g) and 1 serving per container, with 180 mg sodium, 8% of the Daily Value. When a can is one serving, the panel number is the whole can. When a can lists more than one serving, multiply.

Sodium words on the front have fixed meanings under 21 CFR 101.61:

• Sodium free: less than 5 mg per serving.
• Low sodium: 140 mg or less per reference amount, which is a standard amount the FDA sets for each food type and is not always the same as the serving on the label.
• Reduced or less sodium: at least 25 percent less sodium than a comparable reference food.
• No salt added or unsalted: no salt added during processing, for a food normally made with salt. If the food still contains sodium, the label must say it is “not a sodium free food”.

“No salt added” therefore does not mean no sodium. Fish contain some sodium on their own, so the Nutrition Facts number is the one to compare. For more on reading these lines, see our nutrition facts label guide.

Sustainability marks and brand claims

Sustainability information on a can comes in two kinds: third-party marks and the brand’s own statements.

The best known third-party mark for wild fish is the blue MSC label from the Marine Stewardship Council. The MSC says its label means the fish is wild-caught from fishing practices independently assessed as meeting its requirements for environmental sustainability. A mark like this points to an outside standard you can look up.

A brand statement is different. It describes the company’s own practices, and nobody outside the company has necessarily checked it. The Wild Planet product page we read does not show an MSC label for this can. Instead, its sourcing text says the sardines are caught by single-species purse seine (one section also mentions drift net), that Fish Aggregating Devices (FADs) are never used, and that any incidental bycatch is kept and used. Those are specific, checkable descriptions, which is more than a bare “sustainable” on a front label. They are still the brand’s own words.

A practical rule: a logo tells you who set the standard; a sentence tells you what the brand says. Both can be useful, but they are not the same thing.

Worked example: reading the Wild Planet can

Putting it together for Wild Planet Sardines with Lemon:

• Wild or farmed: “wild” is the brand’s description; canned sardines are outside the USDA origin and method rule.
• Species: Sardinops sagax or Sardinops melanostictus, both sold under the market name “sardine”.
• Packing: organic extra virgin olive oil plus water, with lemon, sea salt and aqueous natural smoke.
• Per 3 oz (85 g) serving, 1 per can: 170 calories, 11 g fat (3.5 g saturated), 180 mg sodium (8% DV), 0 g carbohydrate, 0 g sugars, 17 g protein.
• Sustainability: brand statements on fishing method, no FADs and bycatch use; no MSC label shown on the page we read.
• Allergen: fish is one of the major food allergens, so this can is not for anyone with a fish allergy.

For more shelf-stable picks, see our healthy pantry staples guide and the pantry category.

FAQ

Does “wild-caught” on a can have a legal definition?

The USDA rule that defines wild and farm-raised for fish labeling (7 CFR Part 60) excludes canned fish, so on a can the word is the brand’s own description. Look for a named fishing area or method to back it up.

Why does the ingredient list name two species?

Brands that buy from more than one fishery sometimes list each possible species with “or”. Both of the species in our example share the FDA market name “sardine”.

Is “no salt added” the same as sodium free?

No. “No salt added” means no salt was added in processing. A food can still contain sodium, and if it does, the label must say it is not a sodium free food.

Is fish in oil or water better?

That depends on what you are after. Oil adds fat and calories, and water keeps them lower. Compare the two Nutrition Facts panels and the ingredient lists, and pick the one that fits how you plan to use it.

Does a can without an MSC label mean the fish is not sustainable?

Not necessarily. It means there is no MSC certification on that can. Some brands describe their sourcing in their own words instead. Read those statements for specifics such as fishing method and area.