Heat 4 Tablespoons of olive oil in a sauce pan (Use enough oil to cover the bottom of the pan)

Add the cod fillets to the saucepan, working in batches if needed (dont crowd the pan).
Cook about three minutes per side.
Remove the cod fillets from the pan, and transfer them into a dish.

Using the same pan, add two or three tablespoons of olive oil, and add
the garlic, and onion-Saute until soft

Add pepper, and saute together with the onion and garlic mixture until soft.
Add salt to desired taste

Add the tomatoes to the garlic, onion, and pepper mixture, and reduce the heat.
Add sugar
Simmer uncovered, stirring frequently, and until the sauce reaches desired consistency-about 30-35 minutes.

Once the sauce is done, add the cod fish back into the pan, and cook covered for three minutes.Sprinkle with fresh parsley, and serve hot or cold.