Baked Red Snapper With Sour Cream Stuffing

• 4 snapper dressed (red)
• 425 gr dry bread crumbs
• 120 ml sour cream
• 90 gr onion (chopped)
• 55 gr butter melted
• 50 gr celery (chopped)
• 28 gr butter
• 24 gr lemon (diced)
• 12 gr lemon rind (grated)
• 4 gr salt