How to scale a round fish
1. Start by cutting all the fins from the fish using a pair of sharp scissors. Leave the tail intact.
2. Dip your finger into some salt and grip the tail. Remove scales using a swivel bladed potato peeler, scraping along the sides from the tail towards the head.
3. Repeat along the belly and the back. You can use a proper fish scaler for the whole process if you prefer.
4. Wash off loose scales under the tap.