Pickled herring canapes

It goes with borscht very well. Enjoy as much as you can.
Clean, skin, and bone 4 picked herring fillets; flake the fish. Wash 2-3 ribs of celery; chop finely. Peel and dice 1/2 small red onion, 1/3 cup chopped fresh green onions. Combine the herring, celery, onion and green onion in a bowl, add 2 teaspoons of mayonnaise and freshly ground black pepper. Gently mix together, and let stand for 15 minutes. If mixture is too think, add a lemon juice. Spread mixture on toasted bread or slices of French baguette. Garnish with parsley.