--- title: "Invasive lionfish now occupy 4,000 km of Brazil’s coast, four decades after the first Florida sighting" url: https://badiyaa.com/lionfish-invasion-brazil-coast-florida-history/ published: 2026-10-15T19:25:00+01:00 modified: 2026-10-15T19:25:00+01:00 section: Pets & Animals publisher: Badiyaa --- # Invasive lionfish now occupy 4,000 km of Brazil’s coast, four decades after the first Florida sighting The Indo-Pacific predator has reached 18 Brazilian marine protected areas, including reefs with species found nowhere else. Divers and fishers are doing most of the removal. Red lionfish, the striped, venomous predator that spread from Florida through the Caribbean, now occupy about 4,000 of Brazil’s 10,900 kilometers (2,490 of 6,770 miles) of coastline, according to Brazilian researchers who mapped sightings from seven coastal states. They have turned up in 18 of the country’s marine conservation units, some of them coral reefs with species that live nowhere else. That is roughly 37 percent of the coast, reached in about a decade. For readers in the US the pattern will look familiar, because the Atlantic invasion started off South Florida. ## From one Florida fish to an ocean-wide invasion Lionfish belong in the Indo-Pacific, from southern Japan to Australia and east to French Polynesia. In the Atlantic they are almost certainly an aquarium escape. NOAA notes that the first one was reported off South Florida in 1985; the US Geological Survey says the most likely explanation is released pets, and calls the popular story of a hurricane smashing a Florida aquarium probably wrong. The US Geological Survey’s records trace how quickly the fish moved once established: - **1985:** first report off South Florida - **2002:** established from Miami to North Carolina - **2004 to 2005:** numerous in Bermuda, established in the Bahamas - **2007 to 2009:** established around Cuba, Jamaica, Hispaniola and Puerto Rico, and first confirmed in the Gulf of Mexico (now officially the Gulf of America in the US) in December 2009 - **2009 to 2010:** established along the Caribbean coast from Mexico to Venezuela - **2014:** a single fish caught off southern Brazil Counting it out, the fish needed about 17 years to become established along the US Southeast coast, then roughly eight more to ring the Caribbean. Brazil took longer for a physical reason. The Amazon and Orinoco pour so much fresh water and sediment into the sea that they create a barrier about 2,300 km long, and the North Brazil Current flows toward the Caribbean, against the fish. Scientists at the Leibniz Centre for Tropical Marine Research in Germany and Brazil’s Federal University of Ceará estimate that adults needed about ten years, from 2010 to 2020, to work their way from Venezuela past French Guiana into Brazilian waters. ## Why a lionfish does so much damage A mature female releases about two million eggs a year and breeds year-round. In the Atlantic the fish has no known predators and eats more than 50 species of fish. On small reefs in the Bahamas, a single lionfish cut the number of young native fish settling on a reef by 79 percent over five weeks, and a later study linked rising lionfish numbers to a 65 percent drop in the biomass of their prey across two years. Brazil has extra exposure. In 2022 Federal University of Ceará researchers found 72 lionfish along the country’s semiarid northeast coast in estuaries, seagrass beds and reefs, and more than half were in artificial reefs and fishing weirs, the structures that small-scale fishers depend on. Some of those waters are murky, which makes spotting and spearing the fish much harder than on clear Caribbean reefs. ## Who is fighting back Removal in Brazil is largely hands-on. At the Fernando de Noronha archipelago, biologists and divers from the Federal University of Ceará, the federal conservation agency ICMBio and a reef conservation project took out fewer than 50 lionfish in August 2024, then came back in April 2025 and found 114 in four days, many sheltering under the same rocks they had cleared. Brazilian environmental agencies have published guidance on catching and killing the fish, and researchers launched a phone app so anyone can log a sighting. Luiz Rocha, curator of ichthyology at the California Academy of Sciences, has argued that local fishers and divers are the best defense. “If we put the right tools in their hands, it is absolutely possible to keep the invasion under control,” he said when his team confirmed the first Brazilian records in 2021. Experience from the Caribbean and Florida, where removal tournaments are held, suggests total eradication will not happen, but keeping numbers low is achievable. For divers and anglers in US waters: if you see a lionfish where it has not been reported, log it with the USGS Nonindigenous Aquatic Species program. If a spine punctures your skin, NOAA advises getting medical attention immediately, since the sting can cause extreme pain lasting days. ## Further reading - [NOAA Ocean Service: What is a lionfish?](https://oceanservice.noaa.gov/facts/lionfish-facts.html) - [USGS Nonindigenous Aquatic Species: Lionfish species profile](https://nas.er.usgs.gov/queries/FactSheet.aspx?speciesID=963) *Image: Brian Gratwicke, CC BY 2.0 via Wikimedia Commons* *This article was produced with AI assistance and reviewed by our Editorial Desk. [How we work](https://badiyaa.com/editorial-policy/).*