Fill a large pot about 1/2 to 3/4 full of water and bring to a boil.
Add in half a lemon, cut into 2 pieces and the sugar. Stir until the sugar dissolves.
Allow the mixture to come back to a boil for a couple minutes.
Cut the fish into about 1-inch chunks and add to the boiling water. Do not stir!
When the fish begin bobbing and float to the top, strain them out and set on a paper towel or wire rack.
Sprinkle with lemon, lemon pepper and/or dill seed (optional). Dip in butter- serve warm.