At a glance
10–16 in, under 2 lb.
1–80 ft.
Day and night.
10 areas
Know it
Spot it, size it up and learn its habits.
- Identification
A brown to greenish flatfish (usually right-eyed) with a white underside, rough bony knobs along the base of the dorsal and anal fins and behind the head, and sometimes faint orange spots. Plaice look similar but are smooth and have bright orange spots.
- Typical size
10–16 in, under 2 lb.
- Maximum size
About 2 ft and up to about 6 lb.
- Diet
Worms, shrimp, small crabs and cockles.
- Behavior
The only European flatfish that swims far up rivers into fresh water; feeds on the mud flats on the rising tide.
Find it
Where, when and how deep to look.
- Where to find it
Found from United Kingdom & Ireland, France, Northern & Central Europe, Scandinavia & Iceland (Norway, Sweden, Denmark), Spain & Portugal (Azores, Madeira & Canaries), Italy & Malta, Greece & the Adriatic, Black Sea & Caspian, Russia, Mongolia & Kazakhstan and Morocco & West Africa. Estuaries, harbors, sandy beaches and lower rivers from Norway and the Baltic to Morocco, the Mediterranean and the Black Sea.
- Habitat
Estuaries, harbors, sandy beaches and lower rivers from Norway and the Baltic to Morocco, the Mediterranean and the Black Sea.
- Depth
1–80 ft.
- Fishing depth
On the bottom.
- Best season
Autumn and winter in UK estuaries; spring and autumn in the Baltic.
- Best time
Day and night.
- Best tides
The flood tide over the mud flats and the first of the ebb.
- Best weather / conditions
Calm, settled days.
Bait & gear
What to tie on and what to throw.
- Best bait
Peeler crab, ragworm, lugworm and mussels.
- Best artificial lures
Baited spoons dragged slowly over the bottom.
- Tackle setup
Light beach or estuary rod with a 4000 reel.
- Hook size
Size 2–1/0 fine wire hooks.
- Line
12–15 lb mono.
- Leader
15–20 lb flapper rig, often with beads or a spoon.
BigJoe's setup for European flounder
The rod, reel, line and lures BigJoe would use.
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Catch it
Step by step, from first cast to landing.
Step-by-step: how to catch it
- Go where it lives: Estuaries, harbors, sandy beaches and lower rivers from Norway and the Baltic to Morocco, the Mediterranean and the Black Sea.
- Rig up: Light beach or estuary rod with a 4000 reel. 15–20 lb flapper rig, often with beads or a spoon.
- Pick your bait: Peeler crab, ragworm, lugworm and mussels. Lures: Baited spoons dragged slowly over the bottom.
- Fish it: Cast crab or worm baits into estuary channels and let the tide roll them along the bottom.
- Time it: Day and night. The flood tide over the mud flats and the first of the ebb.
- Fishing techniques
Cast crab or worm baits into estuary channels and let the tide roll them along the bottom.
- BigJoe's tip
Flounders love colored beads and a small spoon above the hook; the flash draws them in.
- Catch and release
Catch and release: wet your hands, keep the fish in the water when you can, and release it quickly. Use circle hooks and a dehooker.
Clean & cook
Is it good to eat, and how to prepare it.
- Edibility
Good eating when fresh.
- Cleaning
Bleed and ice it right away. Fillet, then remove the skin and any dark bloodline.
- Cooking suggestions
Mild white fillets, good fried or baked; smoked flounder is popular on the Baltic coast.
Stay safe & legal
Safety, rules and taking care of the fishery.
- Safety warnings
Harmless.
- Regulations
Minimum sizes apply (around 25–27 cm in many areas). In the Baltic there are local seasons. Every country sets its own rules: sea fishing licenses or registration in some countries, a national or regional license plus a local permit for fresh water, and minimum sizes everywhere. Check before you fish.
- Conservation
Keep only fish above the minimum size.
Where it's found
Tap an area to open its fishing map.