Undulate Ray and Similar Species
Raja undulata
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Open the appSeveral fish can be confused with Undulate Ray. Here are the key differences.
Species often confused with {name}
Thornback Ray
Raja clavata
Key differences: The Thornback Ray has numerous large, prominent thorns scattered over its dorsal surface and tail, giving it a very 'thorny' appearance, unlike the smoother disc of the Undulate Ray (apart from the tail thorns). Its coloration is typically more mottled brown with lighter spots, lacking the distinct wavy lines of R. undulata.
Spotted Ray
Raja montagui
Key differences: The Spotted Ray has numerous small, dark spots on its dorsal surface, rather than the wavy lines of the Undulate Ray. It is generally smaller and has a more rounded disc shape.
Cuckoo Ray
Leucoraja naevus
Key differences: The Cuckoo Ray typically has one or two prominent, dark-ringed ocelli on each pectoral fin, but lacks the extensive wavy line pattern of the Undulate Ray. Its background coloration is usually a more uniform brown or grey.
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