Legally, the names Skate or Ray are applied to the specie Rajadae.
Roker is applied to the specie of Raja.
The common distinction is that Skate has a more pointed wing, and Rays have a round wing, but they all look similar once skinned and trimmed.
Skate are usually around 1m long, but can grow as big as 2.8m / 113kg.
It is a unique shaped fish - neither round or a true flat fish - and like Monk, is not prepared in a conventional way. Like Sharks and Dogfish, Skate have cartilage instead of bones.
Skinned and trimmed pectoral fins - known as ‘wings’ - are the main source of edible meat, ranging from 225-800g.
Small pieces of tail (Nobs) and the cheeks can also be used.
The flesh has a sweet taste and can be pan-fried, grilled or poached.
Try the classic recipe of Raie au beurre noir - Skate wings poached in a court bouillon, served with black butter, capers and parsley.