Dab

By Alex Clayton · Updated 23 October 2026

The dab fish (Limanda limanda) is a small, right-eyed flatfish of sandy UK seabeds and a member of the plaice family, Pleuronectidae. The quickest way to recognise one is the lateral line: on a dab it arches sharply over the pectoral fin.

From the shore, dab are most common from October to May, so they keep winter beach sessions going once the cod and whiting thin out. This guide covers telling a dab from a flounder or plaice, the bait and rig that catch them, and the minimum size, which is set district by district rather than UK-wide.

Dab at a Glance

A fish this common around British beaches still has a shore record set in 1936. The key facts:

Fact	Detail
Scientific name	Limanda limanda, a right-eyed flatfish (family Pleuronectidae)
Typical shore size	Most shore dabs are well under 1 lb (454 g)
Maximum length and age	40 cm and 12 years (FishBase)
Habitat	Sandy seabeds, from shallow inshore water down to about 150 m
UK shore season	Mostly October to May
Minimum size	No UK-wide figure. 150 mm in North Western IFCA waters, 15 cm in Cornwall IFCA waters (see the size section below)
British shore record	2 lb 9 oz 8 dr (1.176 kg), 1936
Conservation status	IUCN Least Concern (2014 assessment)

How to Identify a Dab: Dab vs Flounder vs Plaice

Orange spots do not prove you have a plaice. Dab and flounder can both carry red, orange or yellow spots, so identify a dab fish by its structure. A dab has:

both eyes on the right side of the head
a pronounced C-shaped curve in the lateral line, directly above the pectoral fin
rough upper skin (run a finger from tail to head)
no bony knobs behind the eyes
no rough tubercles along the bases of the fins

Feature	Dab	Flounder	Plaice
Lateral line	Sharp curve over the pectoral fin	No sharp curve	No sharp curve
Fin bases	No tubercles	Rough tubercles along the fin bases	Not a key tell
Bony knobs behind eyes	None	Not a key tell	4 to 7, from upper gill opening to eyes
Spots	Can show red, orange or yellow	Can show red, orange or yellow	Orange, but not proof on their own
Example minimum size (NW IFCA)	150 mm	250 mm	270 mm

Habitat helps too: flounder run up estuaries into low-salinity water, and dab do not. See the full flounder and plaice profiles.

The long rough dab (Hippoglossoides platessoides) is a different species with its own British record. Lemon sole is separate again, with its own size limit in some areas (25 cm in Cornwall IFCA waters). See the sole guide and the fish identification guide.

If the lateral line arches over the pectoral fin, it is a dab.

Where and When to Catch Dab in the UK

Dab are a winter fish from the shore. They are most common from October to May and fill the gap once the cod and whiting have left.

Their range runs across the north-east Atlantic from the Bay of Biscay to Iceland and Norway, so dab fishing in the UK works all around the coast wherever there is sand.

On surf beaches, target sand-bar gullies and depressions where the tide gathers food. Dab and plaice hold in these gullies, while flounder sit closer in. Dab feed by day and by night, so dark tides are worth fishing.

Do not expect them far up an estuary: low-salinity water is flounder territory. Boat anglers find them over clean sandy ground down to about 150 m.

Best for: clean sand beaches and offshore sandy ground from autumn to spring. Skip if: you are fishing muddy upper estuaries, where flounder are the target.

Best Bait, Hooks and Rig for Dab

Scale down. Dab have small mouths, so cod-sized hooks and baits miss bites. Build the standard dab rig like this:

Rig: use a three-hook paternoster, clipped down for distance or fished as a flapper for short casts.
Hooks: tie size 2 to 6 hooks on short snoods.
Attractors: in clear water, add 1 to 6 sequins or beads above each hook, red being a favourite. Plaice respond most, then flounder, then dab, so expect a modest boost. A bead doubles as a bait stop.
Bait: use lugworm or ragworm first. Slightly stale, sticky lugworm often catches well. Mussel, squid strip and mackerel strip are the alternatives.
Casting: fish the gullies and sand bars, casting shorter at night and further as the tide drops, with enough lead to hold bottom.

The bait list follows the diet. Dab eat marine worms, molluscs, sand eels, crustaceans, small fish and dead fish, which is why stale worm and fish strip both work. For wider tactics, see the flatfish hub.

Quick comparison: dab on open sand want small hooks and casts to the gullies; flounder sit closer in and up the estuaries.

Dab Minimum Size: It Depends Where You Fish

The GOV.UK table of minimum conservation reference sizes for UK waters does not list dab at all. The size you must respect depends on the district you fish. The official sources say (checked 23 October 2026):

Authority	Dab minimum size
North Western IFCA	150 mm (Byelaw 1, Schedule 1, confirmed 18 January 2024)
Cornwall IFCA	15 cm
Eastern IFCA	Not listed in the Minimum Sizes Byelaw 2019
Kent and Essex IFCA	Not listed
GOV.UK UK-waters table	Not listed

“Not listed” means that table sets no dab size. It does not guarantee that no other local rule applies.

Fishing elsewhere? Check your own authority before keeping a fish: the Sussex, Southern, Devon and Severn, North Eastern or Northumberland IFCA in England; Natural Resources Wales or the Welsh Government; the Scottish Government’s Marine Directorate; or DAERA in Northern Ireland.

Legal and sensible are not always the same. FishBase puts first maturity at about 21.5 cm, so a 15 cm dab may not have spawned yet. Return small fish quickly, with wet hands and out of the sun.

Verdict: measure it, check your district, and return anything in doubt.

How Big Do Dab Grow? Records and Life Cycle

The British shore record dab has stood for 90 years. The BRFC sea fish list (updated 18 June 2026) shows:

Shore: 2 lb 9 oz 8 dr (1.176 kg), 1936, Morfa Beach, Port Talbot, Glamorgan
Boat: 2 lb 12 oz 4 dr (1.254 kg), 1975, Wester Ross

Since June 2024 the BRFC has accepted only measurement-based boat claims, with a qualifying length of 40 cm for dab.

FishBase gives a maximum of 40 cm and 12 years, with first maturity at about 21.5 cm (range 11 to 25 cm) and spawning in batches. Angling sources say dab spawn in spring and can breed within two years. For bigger flatfish, try plaice.

Frequently asked questions

Is a dab the same as a flounder?

No, they are different species. A dab has a sharply curved lateral line over the pectoral fin, rough skin with no tubercles along the fin bases, and stays in saltier water. A flounder has rough tubercles along its fin bases and runs up estuaries into brackish water. See the flounder guide for more.

What is the minimum size for a dab in the UK?

There is no UK-wide minimum size for dab. North Western IFCA sets 150 mm and Cornwall IFCA sets 15 cm, while Eastern IFCA, Kent and Essex IFCA and the GOV.UK UK-waters table list no dab size. Check your local fisheries authority before keeping any fish.

What is the best bait for dab?

Lugworm or ragworm is the best bait for dab, fished on size 2 to 6 hooks. Slightly stale, sticky lugworm often catches well. Mussel, squid strip and mackerel strip are good alternatives, and red sequins above the hook can help in clear water.

Can you eat dab?

Yes, dab is an edible flatfish, though most shore fish are small. Check the Marine Conservation Society's Good Fish Guide for its current sustainability rating, and keep only fish above the minimum size for the district you fish.

Dab