A great accompaniment for grilled fish is lemon. Lemon's acidic and fresh flavor complement the smoky and charred flavor of the grilled fish. Squeezing some lemon juice over the fish before serving can enhance the taste and aroma of the dish. Additionally, lemon can also help to cut through the richness of oily fish and add some brightness to the dish. Other potential accompaniments for grilled fish could be a side of fresh tomatoes, which can also add some acidity and freshness to the dish. However, chopped bread and poached egg may not be as suitable for grilled fish as they may not complement the flavor and texture of the fish as well as lemon and tomatoes would.