Preheat oven to 180°C.
Place snoek into an ovenproof tray, drizzle with a little oil and lemon juice and season with salt and freshly cracked black pepper.
Bake in the oven for 10 -15 minutes or until cooked.
Once cooked carefully remove the bones and flake the flesh.
Mix the mashed potato, snoek flesh, contents of the sachet of Knorr Naturally Tasty Tuna Napolitana, spring onion and lemon juice.
Shape into fishcakes then dip into flour then egg then breadcrumbs.
Heat the oil in a pan and lightly fry the fishcakes until golden brown then transfer to an ovenproof tray and bake in the oven for 10 minutes at 180°C to heat through.