Carp Fish: Nutrition, Mercury Group, Invasive Carp and Cooking

Carp is a name shared by several freshwater fish, but in American kitchens it usually means the common carp, Cyprinus carpio. In USDA SR Legacy data, cooked carp has 162 calories and 22.9 grams of protein per 100 grams, with more fat than cooked tilapia in the same database. This guide covers carp nutrition from USDA, where FDA places carp fish in its mercury advice, what USGS says about the bighead and silver carp known as invasive carp, and how cooks handle the small bones that give carp its reputation.

Peptide Labs does not sell carp or any fish product. This article is general nutrition information, not medical advice.

What is carp? The common carp in the US

According to the US Geological Survey (USGS), the common carp is native to Eurasia and is also sold or known as European, German, mirror or leather carp. USGS lists koi, the colorful pond fish, as one of several bred strains of the same species. In 1877 the US Fish Commission imported common carp from Germany, and for the next two decades it stocked and distributed the fish as a food fish across much of the country.

That effort worked too well. USGS now records common carp in every state except Alaska and describes it as a pest fish, because carp uproot water plants and stir up sediment, which muddies the water for other species. USGS also notes that carp was popular as a food fish in the early 1870s but fell into wide disfavor soon after and is now considered a nuisance fish.

Invasive carp: bighead and silver carp

The phrase invasive carp usually refers to a different group of Asian species. USGS fact sheets say bighead carp (Hypophthalmichthys nobilis) and silver carp (Hypophthalmichthys molitrix) were first imported into the United States in 1973 by a private fish farmer in Arkansas. USGS reports that bighead carp began turning up in the Ohio and Mississippi rivers in the early 1980s, likely after escaping from aquaculture facilities, and it calls silver carp one of the so-called invasive carps.

Both are filter feeders. USGS explains that they eat plankton that larval fish and native mussels also depend on, which is why biologists worry about competition with native species. USGS states that the US Fish and Wildlife Service lists both bighead and silver carp as injurious wildlife. USGS also notes that bighead carp have been used as a food fish in many parts of the world, so a fillet sold as carp is not always common carp; the label or the fishmonger can tell you the species.

Carp nutrition (USDA SR Legacy)

USDA SR Legacy has two carp entries, Fish, carp, raw (FDC 171952) and Fish, carp, cooked, dry heat (FDC 174185). The table shows a USDA 3 oz serving of cooked carp, values per 100 g cooked and raw, and cooked tilapia (FDC 175177) for comparison. Percent Daily Values (%DV) use FDA reference amounts; EPA and DHA have no Daily Value.

Compared with cooked tilapia in USDA data, cooked carp has a little less protein and more than twice the fat per 100 g, along with about three times the EPA and DHA. Its phosphorus and zinc values are also higher, while tilapia lists far more selenium. Our guides to omega-3 fats, vitamin B12 foods and phosphorus foods show how those values compare with other foods.

One gap is worth knowing. The raw carp entry lists 24.7 micrograms of vitamin D per 100 g, 124% of the Daily Value, but the USDA cooked entry does not report vitamin D at all, so no cooked figure can be given here. Our vitamin D foods guide covers fish that do have cooked values.

Carp and mercury: FDA's Good Choices group

FDA and EPA’s Advice about Eating Fish sorts common fish into three groups by mercury level. Carp is listed in the Good Choices group, the middle tier, alongside fish such as halibut, grouper and snapper. That puts carp a step above the lowest-mercury group, where FDA lists catfish, tilapia and freshwater trout. FDA’s chart gives specific advice for people who are pregnant or breastfeeding and for young children, so check the chart itself if that applies to you.

Carp you or a friend caught are a separate case. FDA’s advice says some fish caught by family and friends, such as larger carp, catfish, trout and perch, are more likely to have fish advisories due to mercury or other contaminants. FDA asks anglers to check local fish and shellfish advisories before eating their catch; state agencies publish these for specific lakes and rivers. Our walleye guide covers another freshwater fish with the same issue.

Is carp healthy? What the numbers say

Whether carp is healthy for you depends on your diet as a whole, but the USDA numbers describe it fairly. A 3 oz serving of cooked carp supplies 39% of the Daily Value for protein, 52% for vitamin B12 and 36% for phosphorus in USDA data, with very little sodium. It is a richer, oilier fish than tilapia, so it has more calories and fat per serving. Its mercury group is the Good Choices tier rather than the lowest-mercury group, which matters most for pregnancy and young children under FDA’s advice.

If a clinician has asked you to limit purines, our purines guide covers fish and seafood. If you have been told to watch phosphorus, ask that clinician how a phosphorus-rich fish like carp fits your plan.

How to cook carp around its bones

The main complaint about carp is not flavor but bones. Besides the backbone and rib bones, carp fillets carry rows of small, forked bones in the flesh that do not come out with ordinary filleting. Cooks have worked out several ways to deal with them:

• Score the fillet: cut closely spaced shallow slashes through the flesh down to the skin, then fry it hot so the small bones become crisp and easy to eat around.
• Grind it: ground carp is a common base for fish cakes, fish balls and gefilte fish.
• Cut out the strip: many cooks remove the darker strip of flesh along each side for a milder flavor, and skin the fillets.
• Cook it slowly: braising, stewing and smoking are traditional, and the flesh lifts away from the bones more easily once cooked.
• Cook it through: FoodSafety.gov lists 145°F for fish, or cook until the flesh is no longer translucent and separates easily with a fork.

Fish allergy and labeling

Fish is one of the nine major food allergens in FDA’s guidance, and FDA counts bony fish in that group; carp is a bony fish. Packaged foods that contain carp must declare fish and name the species on the label. People with a fish allergy should talk with an allergist before trying any new fish. For a seafood that sits outside FDA’s list altogether, see our guide to sea urchin.

Frequently Asked Questions

Questions about a label? Contact us or read our Buyer’s Guide. Food comes first; follow the label and ask a healthcare provider before starting a supplement, especially if you take medicines, are pregnant or have a food allergy. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

Last reviewed October 2026.

Related guides: Sea Urchin (Uni): What It Is, Raw Seafood Safety and Allergy, Catfish Nutrition: Farm Raised vs Wild, Mercury and Labels, Tilapia: USDA Nutrition, Protein, Omega-3s and Is It Healthy?.