If you love seafood and crave something unique, grilled barbecue pacu fish ribs are a must-try. Pacu is a freshwater fish from South America, related to the piranha but mild and nutty in flavor. These ribs are tender, flaky, and full of taste. Grilling them brings out a smoky richness that pairs beautifully with a sweet-and-tangy barbecue glaze.
Cooking pacu ribs is easier than you might think. With the right marinade, a hot grill, and a bit of patience, you can serve ribs that rival traditional pork barbecue. They cook quickly, so you’ll have a delicious meal in under 30 minutes. Plus, they make a show-stopping dish for family dinners or summer cookouts.
This recipe guides you step by step. You’ll learn how to season, grill, and glaze the ribs for maximum flavor. You don’t need fancy ingredients—just fresh pacu ribs, your favorite spices, and a simple barbecue sauce.
Whether you’re a seafood lover or just looking to try something new, these grilled barbecue pacu fish ribs will impress. They deliver bold flavor, tender meat, and a fun way to enjoy fish on the grill.
What Are Pacu Ribs?
Pacu ribs are a culinary term for ribs taken from the pacu, a freshwater fish native to South America and closely related to the piranha. Despite their resemblance to piranhas, pacu are mostly herbivorous and have a mild, nutty flavor.
When someone talks about “pacu ribs,” they typically mean the rib bones along with a strip of meat from the fish, often grilled, smoked, or roasted. These ribs aren’t like pork or beef ribs—they’re smaller, more delicate, and usually eaten by picking the meat off the bones rather than cutting through large sections.
Culinary notes:
- Pacu ribs are delicate and flaky.
- They’re best cooked slowly or smoked to prevent drying out.
- They pair well with citrus, garlic, or chili marinades.
Where To Buy Pacu Ribs
Pacu Ribs are not easy to find. I have never seen them in any seafood market. If you are going to find them, you will need to special-order them from a distributor like Samuels & Son Seafood Company
Otherwise, contact specialty fish markets or exotic seafood suppliers and ask specifically for pacu from food‑grade fisheries (South American imports or U.S. aquaculture) and request rib sections.
Confirm that the supplier is licensed and that the fish is handled for food (frozen, filleted, or rib cuts) rather than aquarium trade.
Ensure safe import/sale compliance (seafood regulations, labeling, provenance).
If you find a supplier, verify freshness, storage (frozen vs. fresh), and how the “ribs” are defined (some may ship whole fish).
Barbecued Pacu Ribs
Ingredients
- 1½ pounds pacu ribs meat attached
- 2 tablespoons olive oil
- 2 cloves garlic minced
- juice from 1 lime
- salt & pepper to taste
- smoked paprika, chili powder or brown sugar optional, for rub
- barbecue sauce
Instructions
Prep the Ribs
- Rinse the pacu ribs and pat them dry.
- Remove any small bones that might get in the way.
Marinate
- Mix olive oil, garlic, lime juice, salt, pepper, and any optional spices.
- Coat the ribs evenly and let them marinate for 20–30 minutes (don’t over-marinate; the acid can “cook” the delicate fish meat).
Preheat the Grill or Oven
- Grill: Medium-low heat.Oven: 275–300°F (135–150°C) on a lined baking sheet.
Cook Low and Slow
- Place ribs on the grill or oven tray.
- Cook for 20–25 minutes, turning once, until meat flakes easily with a fork.
Optional Glaze
- Brush lightly with barbecue sauce or honey glaze in the last 5 minutes of cooking.
Serve
- Serve hot with lime wedges, fresh herbs, or a light salad.Pick the meat off the bones carefully—it’s tender and flaky.
Notes
More About the Pacu Fish
Species and Habitat
- Pacu are freshwater fish native to South America, mainly the Amazon and Orinoco river basins.
- They belong to the same family as piranhas (Serrasalmidae) but differ in diet and behavior.
- Unlike piranhas, pacu are mostly herbivorous, eating fruits, nuts, and vegetation, though some species will take small invertebrates.
Appearance
- Pacu have a broad, flat body and teeth that look strikingly human-like, designed for crushing seeds and nuts.
- Color varies: some are silver, some have red or orange tints on their belly and fins.
- They can grow quite large, sometimes exceeding 2–3 feet in length in the wild.
Culinary Aspects
- Pacu meat is mild, nutty, and slightly sweet—a big contrast to oily or “fishy” flavors.
- It is firm but flaky, making it excellent for grilling, baking, or smoking.
- Popular in Brazil and neighboring countries, pacu is often served whole, filleted, or as ribs, grilled or roasted with simple seasonings.
Interesting Facts
- Pacu can live for 10–15 years in aquaculture.
- They are sometimes introduced to non-native rivers, which can impact local ecosystems.
14 Responses
I am very interested in the recipe for cooking Pacu ribs. I have 2 big pauc that spent last summer in my koi pond when they got too big for the aquarium in my office. I have had them in the house over winter and they will go back into the koi pond for spring and summer, at they rate they grow they should be eating size by fall.
Looks great!
as a jungle junkie ,I was born and raised in the southern waters of the Parana’ River,where pacu, dorado (fresh water type), surubi, mandubi, sardin and pejerey(king fish)used to thrive.Unfortunately the fishery it’s not as good now due to pollution and dynamite fishing by our industries, brothers and neighboring countries. 40 years latter new laws are being implemented?. Pleeese! for these fish just use grain salt ,very little white pepper & fresh squeezed lemon juice.Just… taste the fish! Ok I’ll let you use chimichurry sauce to taste.
Thanks norberto for the history and cooking suggestions. – RG
The first time I visited this blog, I can say: this blog rocks! Your writing is so inspiring. Thanks for sharing all here. My suggestion is: try to optimize more your blog, so more people will come and enjoy your posts.
Its awesome! You provide such great information & gives idea most especially for moms. Thanks for posting. If you have the chance feel free to visit me back on my site to get more of my barbecue recipe.
You are very welcome Chef Jay and thank you for your comments. – RG
I had this dish in Lawrence, Kansas at a place called Teller’s (a former bank). It was so good I’ve been dying to make it myself. It was also served with coconut milk rice and I’ve found a place to order a 9 pound box from — on the rib. Did you discover the BBQ recipe? I plan to grill and want to get it right on cooking time. Thanks! This is a GREAT fish!
I did not but I ate there again this summer and told the owner about my site. Maybe I can get them to send it to me. – RG
if you marinate the ribs with chipolte paste liquid smoke and coconut milk for a few hours it makes the meat so moist and tender. grill over a high flame wood grill is perfect to bring a great flavor to the meat and serve it with jicama and blood orange slaw with a caper lemon aoli. its the lobester of the fish world.
I am looking for a recipe for paco paco ribs. Can any one help out, with recipe and supply source. I think this dish would go well in the coastal south. Thanks
You must of just watched the Diners, Drive-in & Dives with Chef Carlos Barros from Quahog’s Seafood Shack. Great episode and yes I am a big fan of the restaurant. I’ll try to get an interview with Chef Carlos and ask him for the recipe but you can watch the show and figure out how he made the barbecue sauce. The question is where do you find Paco ribs? – RG
I just bought 9 pounds of pacu ribs (the minimum quantity they will ship) from Marcomar: http://www.marcomarusa.com. They shipped the ribs frozen in a styrofoam container via FedEx overnight. Fish + shipping to NY came to $110, which seems fair enough for an exotic product. The only slight complication was that I had to deposit the money into their bank account first, since they were not properly set up to accept credit cards. I imagine most of their business is wholesale, but they were happy to sell to me. I will now experiment with rib cooking!
Hi Bjorn, thanks for sharing this information. I’m sure if anyone is interested in buying Pacu Ribs they can call the local fish distributor who sells to the restaurants and ask them if they will sell to them or ask your local fishmonger to order some for you from their distributor. One of the reasons I always say it is important to know your fish, meat, cheese and poultry people. Bjorn, please let me know how they turn out. – RG
OK – I have now gathered some experience with the pacu ribs. They were the feature of one of several courses for a “seafood extravaganza” dinner party we gave (actually, sold, as a school fund raiser) this weekend, and they are really pretty good. I experimented with some of them ahead of time, and have by now broiled, sauteed, smoked and baked them. The main trick seems to be that the skin will be tough and “fishy” unless you apply high heat to it for a while. Since this is not really grilling season in NYC, my best results came from broiling with a brush of barbecue sauce (skin side up) and sauteing with a sprinkle of fresh thyme and rosemary. Smoking made for a nice tasting flesh but an unpleasant skin, which kind of defeats the purpose of eating it off the bones like pork ribs. The fish itself is relatively firm, moderately fatty, and fairly mild tasting (somewhere between bluefish and swordfish) and seems to take well to a variety of seasoning. Definitely worth trying!
Hi Bjorn, thanks for the follow up on Pacu Ribs. Did you see the Diners, Drive-in & Dives with Chef Carlos Barros from Quahog’s Seafood Shack on television? You may be able to find it on On Demand if you have it. Chef Carlos marinates them in his Orange Barbecue sauce and then grills them. Appreciate all the information. – RG
Yes, my awareness of and interest in pacu ribs can be entirely credited to Guy Fieri. I definitely buy the grilling idea, and at some future date I can see getting a batch during the time of year when we are not regularly getting inundated by snow and freezing rain. I really like y0ur web site btw. We have some things in common (11 year old daughters, a Wall Street history, an interest in making and eating good food), but I am way too lazy to do what you are doing. Keep it up!
Thanks Bjorn and please give me updated with some of your great finds. – RG
We just spent spring break in Argentina and Uruguay, and inadvertently ran into pacu central. After a 45 minutes commuter boat ride into the Parana delta from Tigre (close to Buenos Aires), we stopped for lunch at a rather unassuming open air cafe/restaurant. The menu contained the usual array of salads and grilled meats, but highlighted several variations of pacu. I had a grilled side of the fish, complete with a half face with piranha-like teeth and a sweet cheek. It was very good, and it separated nicely into a boneless fillet and a rack of ribs, which, when separated into pieces, looked much like the ones we have discussed above. No major revelations, but the fish was slightly smaller than I had envisioned (maybe 2 lbs), and the non-rib parts were at least as good as the ribs.
Hi Bjorn, sounds like an amazing trip. Thank you for sharing your pacu experiences. I’m guessing not many people get to dine on fresh pacu at the source. – RG
This atrlcie achieved exactly what I wanted it to achieve.
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