Well, since it's the Christmas season, a good start would be a lot of white fleshed fish and seafood. The Italian tradition of La Vigilia, which became a looser tradition in Italian American homes who call it the Festa dei Sette Pesce, is one on Christmas eve where a family eats 7 dishes consisting of primarily white fishes and seafood. The number 7 is supposed to represent several things, including the 7 sacraments of Roman Catholicism, the 7 days that God made the world, or even the 7 hills of Rome.
The most common one I heard was about the 7 sacraments, so therefore the fishes should be white to represent purity.
So, fish like cod (although salt cod is traditional - not exactly your baliwick of fresh fish), whiting, anchovies, sardines, and flounder are very popular. Also, seafood like shrimp, squid, octopus, clams, lobster, scallops, and conch.
I guess it doesn't have to be pure white, but that's the idea.
Many of my friends of Italian descent talk about the challenge of trying to figure out what 7 fish and seafood dishes they will try to get in on Cristmas eve. A common joke is about cheating by putting 3 or 4 in one dish such as a zuppa di pesce.
My family (no Italian blood) has a tradition of fried flounder, shrimp cocktail, mackerel or smoked salmon on crackers, clams and scallops fra diavolo, and fiskeboller and lutefisk.
My mom and I the only ones who eat the latter dishes as an homage to our scandinavian roots.