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Fish

European flounder

Platija

Platichthys flesus

SaltwaterBrackishFreshwater

At a glance

Typical size

10–16 in, under 2 lb.

Depth

1–80 ft.

Best time

Day and night.

Found in

10 areas

1

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.

2

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.

3

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.

4

Catch it

Step by step, from first cast to landing.

Step-by-step: how to catch it

  1. Go where it lives: Estuaries, harbors, sandy beaches and lower rivers from Norway and the Baltic to Morocco, the Mediterranean and the Black Sea.
  2. Rig up: Light beach or estuary rod with a 4000 reel. 15–20 lb flapper rig, often with beads or a spoon.
  3. Pick your bait: Peeler crab, ragworm, lugworm and mussels. Lures: Baited spoons dragged slowly over the bottom.
  4. Fish it: Cast crab or worm baits into estuary channels and let the tide roll them along the bottom.
  5. 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.

5

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.

6

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.

Sources & photo credits

Sources

  1. FishBase — Platichthys flesus
  2. IUCN Red List — Platichthys flesus
  3. International Game Fish Association (IGFA)
  4. FAO Fisheries and Aquaculture
  5. Photo credits