Thornback Ray
The thornback ray is the most common ray in British inshore waters and a genuine target species for sea anglers all around the UK coast.
Recognisable by its kite-shaped body and distinctive dorsal thorns, it draws dedicated shore and boat sessions from spring through autumn when fish move into shallow water.
The wings are also excellent eating — sold in fish-and-chip shops under the name 'skate'.
Scientific Name: Raja clavata
Also known as Roker, Skate (fish-and-chip shop name)
- Diamond/kite-shaped body with sharply angled pectoral fins; long narrow tail roughly equal to body length — classic ray silhouette.
- Dorsal surface mottled brown to grey with dark spots and yellowish patches; underside off-white with grey-black margins along the edges.
- Covered in coarse prickles across the back and tail; large backward-pointing thorns (bucklers) with button-like bases — more numerous and larger in older fish and females.
- Typical boat-caught fish run 5–7 lb; UK boat record stands at 31 lb 7 oz. Females grow larger than males, reaching up to around 85 cm in length.
What to know
Habitat Distribution
- Native to UK waters; found all around British and Irish coasts — the most abundant ray species in inshore areas.
- Key concentrations include the Wash, Outer Thames Estuary, the Solent, Carmarthen Bay, Cardigan Bay, Liverpool Bay, Morecambe Bay, and the Solway Firth.
- Bottom-dwelling across a range of substrates — sand, shingle, gravel, mud — most commonly in 10–60 m, though capable of depths to 300 m.
- Moves offshore into deeper water through autumn and winter, then returns to shallower inshore ground in spring to breed and lay eggs.
Key Locations
- The Solent and south coast of England — reliable boat fishing grounds with good numbers of fish through summer.
- The Wash and Outer Thames Estuary — historically among the most productive thornback concentrations around the British Isles.
- Carmarthen Bay and Cardigan Bay, Wales — recognised inshore hotspots, accessible from shore and small boats.
- Morecambe Bay and the Solway Firth — productive north-west England grounds; inshore fleets from Maryport and Whitehaven target rays commercially here.
- Liverpool Bay — consistent inshore population, accessible to boat anglers from the north-west coast.
Specific Spots
- Sandy or shingle ground adjacent to rocky outcrops — rays use the hard structure as a reference point while hunting over the softer substrate beside it.
- Gullies, depressions, and any seabed feature that breaks up an otherwise flat bottom — these concentrate crabs and small fish, which draws rays in.
- Mixed ground where sand, shingle, and mud intermix; a totally featureless flat bottom is rarely worth fishing.
- From the shore, deeper gullies and channels accessible at low water are worth targeting after dark, when rays move up to feed.
Thornback Ray FAQ
Answers from onWater's species guide.
What are the best lures and bait for Thornback Ray?
Peeler crab is the go-to bait, presented whole or in sections on a single or pennel rig fished hard on the bottom; hermit crab works on the same principle.
When is the best time to fish for Thornback Ray?
Spring (April–May): rays move inshore as water warms, the start of the main shore and inshore boat season. Summer (June–August): peak inshore availability; fish are in shallow water to breed and lay eggs, making them accessible from beaches and small boats.
How do you catch Thornback Ray?
Most UK anglers fish for thornbacks from the shore after dark or from small boats over known sandy and mixed-ground marks. Static bait on the bottom, peeler crab or fish strip on a running leger or pulley rig, is the standard method; the key is finding seabed features rather than fishing open flat ground.
What do Thornback Ray eat?
Crustaceans, crabs and prawns, are the primary food; peeler crab and hermit crab baits consistently produce because they match what rays are already hunting across the seabed.
Where do Thornback Ray live?
Native to UK waters; found all around British and Irish coasts, the most abundant ray species in inshore areas. Key concentrations include the Wash, Outer Thames Estuary, the Solent, Carmarthen Bay, Cardigan Bay, Liverpool Bay, Morecambe Bay, and the Solway Firth.
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