What Arapaima Are and Where to Find Them
Arapaima are among the largest freshwater fish in the world, reaching lengths of 6 to 10 feet and weighing over 400 pounds in their native habitat. They are air-breathers with a distinctive body shape — elongated, heavily scaled, and colored in shades of gray and green with reddish markings on the tail and lower body. Native to the Amazon Basin and other river systems in South America, arapaima live in floodplain lakes, slow-moving channels, and seasonally flooded forests across Brazil, Peru, and Colombia.
These fish are not found in North American waters in the wild. However, some specialty aquariums and private collections in the United States hold arapaima, and a small number of fishing lodges in the Amazon region of Peru and Brazil offer guided trips specifically for arapaima. The fish prefer warm, oxygen-poor waters where their air-breathing adaptation gives them a survival advantage over other species.
Key Takeaways
- Arapaima are air-breathing fish that can grow to 10 feet long and are native only to South American river systems, primarily the Amazon Basin.
- Fishing for arapaima in their native range requires traveling to remote lodges in Peru or Brazil, where the season typically runs from June through October.
- Arapaima are protected or regulated in most of their native range due to overfishing, and many populations are listed as vulnerable or endangered.
- These fish are aggressive hunters that strike hard at the surface, making them prized by anglers seeking a powerful freshwater fight.
- Arapaima cannot be legally imported into the United States as live fish without special permits, and they are illegal to keep in many states.
How Arapaima Behave and Hunt
Arapaima are ambush predators that hunt by waiting motionless near the surface or in submerged vegetation, then striking with explosive speed. They feed on smaller fish, crustaceans, and occasionally birds or small mammals that venture near the water. Because they must surface to breathe air through a specialized labyrinth organ, they are visible to anglers — their breathing creates a distinctive gulping sound and disturbance on the water.
These fish are highly territorial and aggressive, especially during spawning season. They will strike lures and live bait with tremendous force, often launching themselves partially out of the water. Their fighting style is characterized by head-shaking runs and powerful tail thrashes rather than long, sustained runs. Arapaima are also known to be dangerous to humans in some situations — their large scales and bony plates can cause injury if handled carelessly.
Seasons and Access for Arapaima Fishing
The best time to fish for arapaima in the Amazon is during the dry season, roughly June through October, when water levels drop and fish concentrate in deeper channels and lakes. During this period, visibility improves and arapaima are more active and predictable. The wet season, November through May, makes access difficult and fishing less productive because fish disperse across flooded forests.
Access to arapaima fishing is limited to remote lodges in Peru and Brazil, primarily in the Ucayali River region of Peru and the Rio Negro and Solimões systems in Brazil. Most trips require flying into a regional hub like Iquitos, Peru, or Manaus, Brazil, then traveling by boat to the lodge — a journey that can take 6 to 12 hours. Lodges typically operate on a package basis, with all-inclusive trips lasting 5 to 10 days. Costs vary widely but generally range from several thousand to over ten thousand dollars per person, depending on the lodge and season.
Regulations and Conservation Status
Arapaima populations have declined significantly due to overfishing for both food and the aquarium trade. In Brazil, arapaima are protected under federal law, and fishing is prohibited in most areas, though some managed fisheries exist with strict catch limits. Peru allows limited arapaima fishing in designated zones, and Colombia has similar restrictions. Before booking a trip, confirm that the lodge operates legally within local regulations and holds the necessary permits.
Many arapaima populations are listed as vulnerable or endangered by conservation organizations. Some lodges participate in catch-and-release programs or work with local communities on sustainable fishing practices. If you plan to fish for arapaima, research the lodge's conservation record and ask directly about their practices regarding fish handling and release.
Tackle and Techniques for Arapaima
Arapaima require heavy tackle because of their size and power. Most anglers use 8- to 10-weight fly rods with saltwater-grade reels and braided backing, or conventional baitcasting outfits rated for 50- to 80-pound line. Lures include large topwater plugs, surface poppers, and streamers in bright colors — black, chartreuse, and orange are common choices. Live bait such as tetras, piranhas, or small catfish is also effective.
The most productive technique is sight-fishing from a boat in shallow water or along the edges of flooded forests. Guides locate fish by watching for their breathing disturbances and then position the angler for a cast. Arapaima often strike immediately, and the hook-set must be firm and decisive. Once hooked, the fish will fight hard for 10 to 30 minutes, depending on size. Most lodges practice catch-and-release, so handling and reviving the fish properly is important.
What to Expect on an Arapaima Trip
A typical day on an arapaima expedition begins before dawn, with anglers and guides heading out by boat to likely fishing areas. The pace is slow and deliberate — guides scan the water constantly for signs of fish, and fishing may involve long periods of waiting and watching. Success is not may provide; some days produce multiple strikes, while others yield none. Physical demands are moderate but steady: you will be in a boat for 8 to 10 hours, often in heat and humidity, and will need to cast repeatedly.
Lodges provide meals, accommodation, and guides as part of the package. Most trips include anglers of varying skill levels, and guides are experienced at working with both fly and conventional tackle. Bring sun protection, insect repellent, and polarized sunglasses. Many lodges are remote and basic in amenities, so set expectations accordingly. Internet and phone service are often limited or unavailable.
Arapaima in Captivity and Legal Status in North America
Arapaima cannot be legally imported into the United States as live fish without a special permit from the U.S. Fish and Wildlife Service, and such permits are rarely issued. Many states classify arapaima as prohibited aquatic species, meaning they cannot be kept in captivity at all. Even in states where they are technically legal, they require specialized care — large tanks, warm water, and access to the surface for air-breathing — that makes private ownership impractical for most people.
Some public aquariums in the United States hold arapaima as part of educational exhibits. If you want to see one without traveling to South America, check with large aquariums in your region that feature Amazon exhibits. These displays are the only legal way most North American anglers will encounter arapaima in person.
Frequently Asked Questions
How big do arapaima actually get?
Arapaima typically reach 6 to 10 feet in length and can weigh 400 pounds or more in the wild. The largest recorded specimens exceed 10 feet. Fish in captivity or in heavily fished areas tend to be smaller, usually 4 to 6 feet.
Can I catch arapaima in the United States?
No. Arapaima are not found in wild North American waters and cannot be legally kept in captivity in most states. The only way to fish for arapaima is to travel to South America, primarily to lodges in Peru or Brazil.
What is the best time of year to fish for arapaima?
June through October is the dry season in the Amazon, when water levels drop and arapaima are more concentrated and active. This is the peak season for arapaima fishing. The wet season, November through May, makes access difficult and fishing less productive.
Do arapaima bite lures or only live bait?
Arapaima will strike both lures and live bait. Topwater plugs, poppers, and large streamers are effective, as are live fish. Most anglers use a combination of techniques depending on conditions and what the guide recommends.
Are arapaima endangered?
Many arapaima populations are listed as vulnerable or endangered due to overfishing. They are protected or strictly regulated in Brazil, Peru, and Colombia. Some lodges participate in conservation programs, so research the lodge's practices before booking a trip.