Fisher King Herrings Fillets in Tomato Sauce

Mackerel fillets 50% [mackerel {scomber scombrus (a *), catch area: North East Atlantic fao27}, {scomer japonicus (b *), catch area: Pacific fao61}], tomato sauce 50% [water, concentrate tomato 9%, sugar, rapeseed oil, salt, spirit vinegar, mustard (water, mustard, spirit vinegar, sugar, salt, spices), modified corn starch, spices, dried vegetables (carrots, celery, onion, leek, parsley) , aroma, acidity regulator: citric acid; pepper concentrate