Flounder (Paralichthys/Pseudopleuronectes spp.) fish identification

Flounder

Paralichthys/Pseudopleuronectes spp.

World Record

33" · 22 lbs 7 oz

Also known as

Fluke, Flatfish, Mud Dab

About the Flounder

Flounders are masters of camouflage, boasting a remarkably flattened, oval-shaped body perfectly adapted for life on the seafloor. Their most distinctive feature is having both eyes on one side of their head, which migrates during larval development. Their coloring typically matches the sandy or muddy bottom they inhabit, often displaying intricate patterns or spots that allow them to blend seamlessly. They possess a large mouth with sharp teeth, hinting at their predatory nature.

Source: FishBase & iNaturalist

Habitat

These fascinating fish are primarily bottom dwellers, preferring sandy or muddy substrates where they can expertly bury themselves, leaving only their eyes exposed. They thrive in a variety of environments, from shallow estuaries and bays to nearshore coastal waters and deeper offshore areas, adapting their depth preferences seasonally.

Distribution

Found globally, various species of flounder inhabit temperate and subtropical marine waters across the Atlantic, Pacific, and Indian Oceans. They are commonly encountered along continental shelves and in coastal estuarine systems.

Behaviour

Flounders are classic ambush predators, lying motionless and camouflaged on the bottom, patiently waiting for unsuspecting prey. When a meal, such as small fish, crabs, shrimp, or worms, passes by, they erupt from the substrate with surprising speed to engulf it. Many species exhibit seasonal migrations, moving to deeper, warmer offshore waters during colder months and returning to shallower, cooler inshore areas for feeding and spawning.

Edibility

★★★★★

Highly prized by anglers and chefs alike, flounder offers a delicate, flaky white meat with a mild, sweet flavor. It is considered excellent table fare, suitable for a wide range of culinary preparations.

Lure suggestion

Successful flounder angling often revolves around presenting bait or lures close to the bottom. Live minnows, strips of squid, or cut bait like mackerel or bunker are highly effective. Bucktail jigs tipped with soft plastic baits, especially scented options like Gulp!, are a top choice. A simple hi-lo rig or a Carolina rig allows for natural bait presentation, while a slow retrieve with jigs or bucktails mimics a fleeing baitfish, enticing strikes from these ambush predators.

Flounder Regulations

Select a state to see size limits, bag limits, and seasons for Flounder.

Select a state

Always confirm with the official state agency before keeping a fish.

Biggest Flounder

No catches logged yet for Flounder.

Be the first, download CatchVault and log your catch!

Tips & Tactics

Related Species

Where to Catch Flounder

States where Flounder is found, based on CatchVault's waterbody commonality data.

Think You Can Top the Leaderboard?

CatchVault is available on iOS. Download the app, log your Flounder catch, and see where you rank.

Download on theApp Store