Season the fish filets with the blackening spice.
Smoke over very low heat until just cooked through. Allow to cool.
Flake the fish into small pieces. Set aside.
Combine mayo, cream cheese, and sour cream.
Add the lemon zest and juice, celery, shallot, pickle, capers, parsley, worcestershire, hot sauce, and blackening spice.
Gently combine so the fish doesn't turn to total mush - this leaves more texture to the dip.
Season to taste with salt and pepper.
Serve with crackers, crostinis, or my favorite: salt and vinegar kettle chips.