Seafood is a great source of protein, healthy fats, and micronutrients (vitamins & minerals), so it’s perfect to include on a keto diet. All types of finfish are fine (cod, tilapia, salmon, flounder, catfish, trout, snapper, etc.). Most shellfish and crustaceans are great for keto but some are a bit higher in carbs, such as oysters. Any shellfish is still a much lower-carb choice than foods high in sugar and starch, though, so don’t worry too much about the carbs in shellfish. And canned seafood is a fantastic budget-friendly keto food. Since they’re shelf-stable, stock up on canned salmon, sardines, mackerel, and tuna when they’re on sale.