Crawfish vs Shrimp: What's the Difference?

Crawfish vs shrimp is freshwater versus salt: crawfish are small clawed crustaceans from Louisiana ponds and swamps that yield about 15 percent tail meat, while shrimp are clawless marine animals from Gulf and Atlantic waters that are mostly meat. Both taste sweet; crawfish are richer and earthier, shrimp cleaner and firmer.

Order crawfish for a seasoned boil between February and May. Order shrimp for everything else, all year, from a fried basket to the grill.

Crawfish vs shrimp at a glance

	Crawfish (crayfish)	Shrimp (Gulf white and pink)
Taxonomy	Order Decapoda, superfamily Astacoidea, family Cambaridae	Order Decapoda, penaeid shrimp
Where it lives	Fresh water: swamps, ponds, ditches, flooded rice fields	Estuaries and coastal waters, Gulf and Atlantic, out to about 100 ft
Size	Adults 2.2–4.7 in; 10–35 per pound whole	White shrimp to 7–8 in, pink shrimp over 8 in; sold by count per pound
Claws	Two, small	None
Flavor	Sweet and mild, with rich, earthy head fat	“Flavorful and sweet” (NOAA)
Texture	Tender, springy tail	Firm, snappy; white shrimp slightly more tender
Meat yield	About 15% of live weight	Most of the animal is tail meat; shells are thin and peel off
Price	Varies; seasonal, falls 40–55% at peak	Varies; 2024 white shrimp dockside about $1.50/lb, retail far higher
Best cooking methods	Seasoned boil, étouffée, bisque, pies	Grill, sauté, fry, boil, peel-and-eat, ceviche
Nutrition (100 g, cooked)	87 kcal, 17.5 g protein, 1.3 g fat, 137 mg cholesterol, 97 mg sodium	99 kcal, 24.0 g protein, 0.28 g fat, 189 mg cholesterol, 111 mg sodium

Are crawfish and shrimp related?

Yes, but as cousins rather than siblings. The University of Kentucky’s entomology department places crayfish in the order Decapoda along with lobsters, crabs and shrimp, and Louisiana Sea Grant makes the same point: the two commercial crawfish species “are crustaceans in the order Decapoda (ten legs), the same as lobster, crabs and shrimp.” Within that order, crawfish sit with the clawed lobsters in the superfamily Astacoidea, while Gulf shrimp are penaeid shrimp.

Habitat is the practical difference. The USGS lists red swamp crawfish in rivers, lakes, ponds, ditches and rice fields, all fresh water. NOAA says white shrimp live in estuaries and coastal waters out to about 100 feet, from New York to Florida and around the Gulf to Mexico, and pink shrimp are most abundant off southwestern Florida.

Do crawfish taste like shrimp?

Similar sweetness, different depth. NOAA describes white shrimp as “flavorful and sweet” and slightly more tender than other shrimp, and pink shrimp as sweet and tender. Crawfish tail meat is also sweet and mild, with a springier bite and a faint mineral note from the mud-bottom habitat.

What separates them is the head. The yellow-orange crawfish “fat” (hepatopancreas) is what the LSU AgCenter calls “an important flavoring condiment in Louisiana cuisine,” and sucking the heads adds a rich, almost liver-like savor that shrimp never have. Boil seasoning covers both, so in a mixed boil the texture tells you which is which. For a deeper read, see what crawfish taste like and what shrimp taste like.

Crawfish vs shrimp nutrition: which is healthier?

Both are lean, high-protein shellfish. USDA FoodData Central lists 100 grams of cooked shrimp at 99 calories, 24.0 grams of protein and 0.28 grams of fat, with 189 mg of cholesterol and 111 mg of sodium. The same weight of farmed, cooked crawfish has 87 calories, 17.5 grams of protein and 1.3 grams of fat, with 137 mg of cholesterol and 97 mg of sodium.

Shrimp win on protein per bite; crawfish win on vitamin B-12 (3.1 micrograms per 100 g), copper and omega-3s, with about 160 mg of EPA and DHA versus 30 mg in plain cooked shrimp. Watch the label on shrimp: USDA’s entry for shrimp treated with moisture-retaining additives jumps to 947 mg of sodium per 100 g.

Allergy note: the FDA lists crustacean shellfish, with “crab, lobster, shrimp” as its examples, among the nine major food allergens. Crawfish are crustacean shellfish too, so anyone allergic to shrimp should treat a crawfish boil as off limits.

How are crawfish and shrimp cooked differently?

Crawfish are almost always boiled whole, live, in heavily seasoned water with corn, potatoes and sausage, then peeled at the table; the LSU AgCenter notes all crawfish leave the farm live and most reach consumers that way. The peeled tail meat, sold in 12-ounce and 1-pound packs, goes into étouffée, bisque, pies and pasta.

Shrimp are far more flexible because they are sold headless, peeled or deveined, fresh or frozen, and need only two or three minutes of heat. Grill them, sauté them in garlic butter, fry them in a basket, or boil them in the shell for peel-and-eat shrimp. The one rule that applies to both: overcooking turns sweet meat rubbery, and crawfish, being smaller, go rubbery faster.

Crawfish vs shrimp boil: which should you throw?

Pick by the calendar. The LSU AgCenter’s farm calendar runs crawfish harvest from November or December through May or June, with Mississippi State Extension noting that about two-thirds of the crop lands between March and June. Wild Atchafalaya crawfish typically run February to May. Shrimp have no such window: NOAA calls white shrimp an “annual crop” that lives under two years, and frozen Gulf shrimp are sold year-round.

Budget by yield. Plan 3 pounds of whole crawfish per person because only about 15 percent of that weight is tail meat; 1 pound of shell-on shrimp per person feeds the same appetite. Shrimp also forgive a late guest, since they can be boiled in batches, while crawfish must go in live. Our seafood boil guide covers timing, seasoning and sides for both.

Which costs more?

Per pound of meat, crawfish usually cost more than shrimp despite the cheaper sack. Mississippi State Extension says Louisiana crawfish prices fall 40 to 55 percent for several weeks at peak production, so March and April are the cheapest months to buy a sack, in Louisiana or Orlando. NOAA reports 2024 white shrimp landings of 107 million pounds worth $159 million, about $1.50 per pound at the dock, and the thin shells mean most of that weight is edible. Factor in the 15 percent crawfish yield and shrimp deliver more meat per dollar in any month but peak crawfish season.

Which should you order?

• A spring boil with friends: crawfish, 15- to 20-count, by the pound.
• A fried basket, tacos or a sandwich: shrimp, every time; crawfish are too small to bread well.
• Grilled skewers or scampi: shrimp; their firm, large tails hold up to direct heat.
• Étouffée or bisque: crawfish tails for the richer Louisiana version, shrimp for a lighter one.
• Peel-and-eat at a Florida fish house: Gulf shrimp. Fish On Fire’s menu runs on Gulf shrimp and grouper, and our pink shrimp guide explains why the Florida catch is sweet.

Still sorting out the names? Read crayfish vs crawfish for the dialect map and shrimp vs prawns for the other side of the counter.

Bottom line

Crawfish and shrimp are both sweet decapods, but crawfish are clawed freshwater animals with a short spring season and a 15 percent meat yield, while shrimp are clawless, marine, mostly meat and available all year. Throw a crawfish boil from February to May, cook shrimp the rest of the time, and keep the allergy warning in mind because both are crustacean shellfish.

More crawfish guides

• What does crawfish taste like?
• Crawfish vs lobster
• What is a seafood boil?

More shrimp guides

• Shrimp sizes explained
• Florida pink shrimp
• What is rock shrimp?