Lesser Spotted Dogfish
The lesser spotted dogfish — officially the small-spotted catshark — is the most commonly caught shark from UK shores and boats.
Barely a beach session goes by in summer without one turning up, and while some anglers treat them as a nuisance, they're a genuine small shark worth understanding.
They hunt in packs across sandy and muddy ground all around the British coast, and on the right night they'll take every hook on a multi-hook rig.
Scientific Name: Scyliorhinus canicula
Also known as Small-spotted catshark, Sandy dogfish, Rough-hound, Morgay (Scotland and Cornwall), Rock salmon, Rock eel, Sweet William, Murgey (Cornwall)
- Slender, shark-shaped body with a blunt snout; brownish-grey above with scattered dark brown spots, pale grey-white belly — the small, numerous spots separate it from the larger, fewer-spotted bull huss.
- Two small dorsal fins set well back toward the tail, prominent gill slits on both sides, and sandpaper-rough skin that can abrade bare skin badly — handle with care.
- The nasal flap meets in the middle and extends over the upper jaw — the clearest single ID feature distinguishing it from bull huss, where the flaps are separate.
- Typically 60–80cm long; average rod-caught fish around 1kg (2¼lb), with big specimens reaching 1.6kg (3½lb) or more. UK shore record stands at 4lb 15oz.
What to know
Habitat Distribution
- Native to UK waters; found all around the British and Irish coastline, from Cornwall and the south coast of England to Scotland, Wales, and Northern Ireland.
- A bottom-dwelling species of sandy, muddy, and gravel seabeds — rarely over rocky ground. Depth range is wide (10–780m), but inshore fish typically work shallower ground.
- Moves closest inshore from June through October; present year-round in deeper water offshore.
- Travels in shoals, so where you find one you'll usually find many — a shoal moving through can fill every hook on a paternoster rig within minutes.
Key Locations
- Cornwall and the southwest coast — common year-round as bycatch in demersal fisheries and a regular shore catch from beaches and piers.
- Bristol Channel — well-documented population; the subject of UK reproductive biology research and a reliable target for boat and shore anglers.
- All coastal areas of Britain and Northern Ireland — dogfish are genuinely widespread; any sandy or muddy beach fished at night in summer is likely to produce them.
- Irish Sea — the UK boat-caught record came from here; boat fishing over clean ground is productive throughout the season.
Specific Spots
- Sandy and muddy patches of seabed close to shore — dogfish follow the scent trail of bait along the bottom, so flat, open ground is more productive than broken reef.
- Gullies and channels between sandbanks concentrate fish moving with the tide; casting into or across these features puts bait in the path of hunting shoals.
- After dark, dogfish move into shallower water to feed — night sessions from beaches and piers consistently outperform daytime fishing.
- From a boat, drifting over clean ground in 10–40m is standard; anchoring over a known sandy patch and fishing two or three baits on the bottom works well when the shoals are concentrated.
Lesser Spotted Dogfish FAQ
Answers from onWater's species guide.
What are the best lures and bait for Lesser Spotted Dogfish?
Fresh fish strips, mackerel, herring, and pilchard are the top choices. The oilier and fresher the better; the scent trail is what draws dogfish in, not visual appeal. Lugworm, ragworm, and squid all work, particularly when tipped with a strip of fish to boost scent.
When is the best time to fish for Lesser Spotted Dogfish?
Year-round presence in UK waters, but inshore fishing is most consistent from June through October when fish move into shallower coastal ground. Night sessions through summer produce the most reliable catches from beaches, piers, and harbour walls.
How do you catch Lesser Spotted Dogfish?
Most UK anglers encounter dogfish from the shore at night, fishing a leger or paternoster rig with fresh fish strip on the seabed over sandy or muddy ground. Boat anglers drift or anchor over clean bottom and fish two or three baited hooks down.
What do Lesser Spotted Dogfish eat?
Bottom-dwelling invertebrates, crabs, worms, molluscs, and small crustaceans, make up much of the diet, which is why fresh crab and lugworm are reliable baits.
Where do Lesser Spotted Dogfish live?
Native to UK waters; found all around the British and Irish coastline, from Cornwall and the south coast of England to Scotland, Wales, and Northern Ireland. A bottom-dwelling species of sandy, muddy, and gravel seabeds, rarely over rocky ground.
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