Nice one @Dinglebay, always helpful for those who dont catch rays on a regular basis.
Another pair of fish that cause confusion are the Bull huss ( Huss ) and the Lesser spotted dogfish ( doggy, woof and various other names )
It's sometimes reported that someone has caught a good LSD of over 2.5 - 3.0lb when it is infact a small BH .Conversely LSD are claimed to be small BH
Body colouration and marking can and are often confused.
The only conclusive identification is through looking at the fishes nostrils.