Preparation soak fish in water to cover for 8 hours.
Rinse and bone.
Cut in 1/2-inch squares.
Reserve combine vinegar, onion, allspice, and red pepper in saucepan.
Bring to a boil; boil for 1 minute remove from heat.
Add oil pour over fish.
Marinate for 24 hours.
Drain; top each toast round with fish square; garnish with paprika and parsley.