The best sides that go with seafood are Quinoa, Salad, Pasta, Potatoes, Mashed Potatoes and even grilled or steamed vegetables.
I like to have a bowl of Quinoa or grilled or steamed vegetables alongside my seafood.
Some days I would rather have a nice chicken salad along with the seafood.
Or cook some shrimp and add the cooked shrimp to the salad and make a shrimp salad which is seafood and it goes well with most other seafood.
Seafood is also good to eat alone but having some side dishes to eat along with the seafood is good and makes the seafood more filling as well.
Lemony Greek Potatoes, Easy baked Risotto, Clam Chowder, Baked Clams etc all go well with Seafood as well as zucchini, squash, and peppers and fish tacos are good side dishes for seafood.