Neither prawns nor monkfish (that used to be used years ago before monkfish became trendy and expensive.)
If something is on the menu as Scampi it must be whole tail scampi.
https://groceries.iceland.co.uk/youngs-scampi-220g/p/57309
Scampi fries or Scampi bites are other fish moulded to the shape.
https://groceries.iceland.co.uk/whitby-seafoods-breaded-scampi-bites-203g/p/66236
Wiki:
Scampi, also called
Dublin Bay Prawn, or
Norway Lobster, (Nephrops norvegicus), is an edible lobster of the order Decapoda (class Crustacea)
similar in form to Lobster
Prawn is a
common name for small aquatic
crustaceans with an
exoskeleton and ten legs
Shrimp Scampi is a food that includes various culinary preparations of certain crustaceans,
[2] such as
Metanephrops, as well as
shrimp or
prawns. Shrimp Scampi preparation styles vary regionally. The United Kingdom legally defines
scampi specifically as
Nephrops norvegicus,
[3] Monkfish tail was sometimes illegally used and sold as scampi in the United Kingdom in the past
[4] contravening the Fish Labelling (Amendment) England Regulation 2005 and Schedule 1 of the Food Labelling Regulations 1996.
For completeness, crayfish are a form of fresh water lobster