Round fish · Rock, pier and boat

Coalfish (saithe)

Small 'billet' swarm north-east piers and rocks from summer into autumn. Cumbria gets them in winter.

Coalfish (saithe)
Image: Jonathan Couch, A History of the Fishes of the British Islands (1862–65), Public domain, via Wikimedia Commons
Know it
Like a pollack but with a straight, pale lateral line, a dark back and the jaws level.
Bait
Lures, feathers, float with strip
Rigs
FeathersSliding floatCasting metalJig-head shadPirk and muppets
Table
Good eating Slightly grey raw flesh that whitens when cooked. Fine in fishcakes, pies and curries.

Season

Typical months on the North West and North East coasts, with this month ringed. Seasons shift a few weeks with water temperature and run differently around the coast: see each region's headline fish below.

Irish Sea
North Sea
PeakPresentRareIrish Sea = North Wales to Cumbria · North Sea = Yorkshire to Northumberland

Legal minimum size

Coalfish (saithe)

Last checked 18 October 2026

Measured from the tip of the snout to the end of the tail (rays: wing tip to wing tip). Each region links to its regulator.

No size for this fish is listed in the regional rules we checked for Pembrokeshire, Gower and South Wales, Severn estuary, Somerset and North Devon, Cornwall and the Isles of Scilly. That may mean none is set, or that the national rules apply: check locally.

and 10 other regions

Rules change, usually each spring. Check the regulator for the area before you keep a fish.

Tips

Pollack under a float

Prawn out-fished mackerel strip by about twelve to one for small pollack and coalfish, set just above the kelp. Use a hooklength lighter than the leader, so a snag costs only the hook.

Coalfish or pollack?

A coalfish has a straight, pale lateral line, a smaller eye and a level jaw. A pollack's lateral line curves over the pectoral fin and its lower jaw juts out.

A headline fish in

All year, best autumn and winter

Scottish Borders to Aberdeen

Harbours and rock marks after dark. Tough baits like squid or mackerel last longer against small coalies.

All year

Moray Firth, Caithness, Orkney and Shetland

Harbour walls and rock edges everywhere. Small metal lures for coalies, bigger lures over kelp for pollack.

Where to catch it

Regions with marks where coalfish (saithe) is one of the main fish, and how many marks.

How to cook it

Slightly grey raw flesh that whitens when cooked. Fine in fishcakes, pies and curries. Simple ways to cook it at home. More on bleeding, gutting, filleting and freezing in From sea to plate.

Method 1

Fishcakes

Poach fillets in milk, flake, and mix with mashed potato, spring onion and seasoning. Shape, chill for half an hour, then fry until crisp.

Method 2

Fish curry

Soften onion, garlic and ginger, add curry spices and a tin of tomatoes or coconut milk and simmer for 10 minutes. Add chunks of coalfish and simmer gently for 5 minutes until just cooked.