In a large plate, mix together flour with salt and pepper.
Pat the fish in the flour, so that they are coated evenly.
Heat the oil in a large frying pan.
When the oil is hot, add the fish.
Cook for 1-2 minutes until golden brown, turnover and cook the other side for a further 1-2 minutes.
Remove the fish from the frying pan and wrap in foil to keep warm.
Wipe the frying pan with paper towels and return to the cooker to a medium heat.
Add the butter and heat until they melt and become light brown.
Take off the heat and add lemon juice.
Add the parsley and capers.
Give the sauce a mix.
Place the fish into the pan for a quick heat and soaking up of the butter sauce.