Brazilian flounder: Facts, Records, and How to Catch Them | FishyAF Species #
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Brazilian flounder
paralichthys brasiliensis
Feels like dead weight till it panics, then it's a sand-sled with teeth. - Rafael Pinto
Quick Facts
Average Size
2–3 inches 0.005–0.012 lbs
World Record

Pending

Habitat
Sandy Estuaries And Surf Zones
Best Techniques
Jigging And Bottom Fishing
Best Baits
Live Shrimp And Small Fish
Challenge Score
Savage: 45
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Brazilian flounder (Paralichthys brasiliensis): A Bold, Memorable Hook LineIntroductionThe Brazilian flounder is the South Atlantic's ambush artist: a doormat with teeth that turns sandbars into trapdoors. If you're poking around surf cuts, tidal channels, or muddy estuaries from Brazil down into Argentina, this is the flatfish that mugs your bait and leaves the scene invisible. For anglers curious about Brazilian flounder facts, it's a fish that rewards patience, bottom contact, and a sixth sense for subtle taps.What Makes the Brazilian flounder Unique?Two standout traits define the Brazilian flounder for anglers. First, its camouflage is ridiculous. With a couple of shivers, it disappears under a sugar-thin layer of sand and matches the bottom like it was born from it. Second, it's a left-eye flounder with a serious mouth. The jaws are lined with sharp, canine-like teeth, letting it crush shrimp and inhale small mullet in a blink. That mix of stealth and sudden violence is what makes the hit feel like a trapdoor dropping out from under your jig.Habitat & Global RangeAsk about Brazilian flounder habitat and you'll hear the same hits: sandy surf zones, inlet mouths, channel edges, and brackish estuaries where tide and current are always at work. They thrive in warm-temperate water and slide between salt and brackish with ease, especially as juveniles. You'll encounter them tight to the bottom, often right where current scours a subtle depression or where a sandbar drops off into a darker lane. From beach anglers to small-boat drifters, anyone who can read sand structure is playing on the Brazilian flounder's home court.Behavior & TemperamentThis fish is a classic sit-and-blast predator. It settles in, keyed to current, and smashes whatever wanders along the conveyor belt. Strikes are crisp, but fights are measured: a short, heavy sprint followed by a stubborn, wide-body grind. They're not marlin, but they'll absolutely make you earn it when they plant on the bottom and helicopter just outside net range. Feeding windows often line up with moving water and low light; think dawn, dusk, and peak tidal push.Ecological ImportanceAs a mid-level predator, the Brazilian flounder links estuarine productivity to nearshore food webs. It mows down crustaceans and small schooling fish, then becomes fuel for larger predators and coastal fisheries. Eggs drift offshore, larvae ride currents back, and metamorphosed juveniles pack into nursery creeks. It's a life cycle tailored to estuaries that makes them great indicators of coastal health.Conservation & Environmental PressuresCoastal development, dredging, and polluted runoff don't play nice with a fish that needs clean, structured sand and healthy tidal flow. In heavily urbanized bays, sediment quality and contaminants can pinch nursery success. Fishing pressure can stack up around inlets and popular beaches, especially where multiple flounder species overlap. Formal global assessments lag behind, so smart local management and clean-water policies carry the load.The FishyAF TakeThe Brazilian flounder is the perfect test of whether you can truly read the bottom. If you can picture how current combs a sandbar, where bait stalls, and how a flatfish angles its body into the drift, you'll catch them. Miss those micro-details and you're casting practice. This fish rewards stealth, tidy jig hops, and an almost obsessive focus on "feel." Nail that, and you'll convert mystery taps into dinner. That's the game, and the Brazilian flounder is a very honest referee.

What Is a Trophy Size Brazilian flounder?

Top Fisheries for Brazilian flounder

Best places to catch Brazilian flounder and how far they are from you.

From iconic trophy waters to bucket-list destinations, these are some of the best places on the planet to target Brazilian flounder.

Lagoa dos Patos Estuary

Rio Grande do Sul Brazil
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Miles

Baía de Paranaguá

Paraná Brazil
--
Miles

Guanabara Bay

Rio de Janeiro Brazil
--
Miles

Río de la Plata Estuary

Uruguay-Argentina
--
Miles

Mar del Plata Nearshore

Buenos Aires Argentina
--
Miles
Seasonality Chart

Best months to catch Brazilian flounder: May, Jun

fair
fair
good
great
peak 🔥
peak 🔥
great
great
good
good
fair
fair
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Feb
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Apr
May
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Aug
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Oct
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Dec

Brazilian flounder Intelligence

Fishing Window
Peak
Best Time
Season Score 67/100
Trend Declining
Peak Season In 11 Months
Difficulty Meter
45
Savage
Demands Skill
Feeding Triggers
Time of Day Very High
Temperature Moderate
Current High
Weather High
Most Important: Time of Day
Behavior
Brazilian flounder
Behavior Profile Radar
Strike
Brazilian flounder
Strike Profile Radar
Positioning
Brazilian flounder
Positioning Radar
Fight
Brazilian flounder
Fight Radar
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Where to Find Brazilian flounder
Preferred Structure
Wood
Rock
Weeds
Undercuts
Depth Breaks
Water Column
Surface
Mid
Bottom
Cover vs Roam
Cover Roam

Gear Loadout for Brazilian flounder

A reliable starting setup for targeting Brazilian flounder, based on typical size, habitat, and presentation style.

Core Setup

  • ROD 7' medium-light fast-action spinning rod
  • REEL 2500–3000 size with smooth drag
  • LINE 10–15 lb braid
  • LEADER 15–20 lb fluorocarbon

Lures & Baits

  • jigheads with soft plastics
  • bucktail jigs
  • live shrimp
  • small mullet

Tactical Notes

  • drift or cast along bar lips and channel edges
  • keep constant bottom contact and use short hops with pauses