Fish & seafood

Fish and seafood is one of the most nutrient-dense categories we track, with a median Nutrient Density Score of 76 across 60 foods. Because our score measures nutrients per calorie on a 1 to 100 relative scale, the standouts here tend to be lean, low-calorie proteins that still deliver heavy loads of vitamin B12, selenium, zinc, iron, iodine, and long-chain omega-3 fats. Shellfish and mollusks lead the pack, packing minerals into very few calories. Foods score lower when they carry more calories from fat, or when breading, added oil, and heavy processing dilute the nutrient-to-calorie ratio.

The top performers are unusually mineral-rich. Snail tops the category at 95, driven by iron and magnesium with almost no fat. Conch (91) and octopus (90) pair lean protein with strong B12 and copper, while fish roe (88) concentrates omega-3s and vitamin D.

To choose well, favor mollusks and small oily fish, and prepare them simply. Poaching, steaming, or broiling preserves the high scores that deep-frying erodes. Individual needs vary, and some seafood carries sodium or mercury considerations, so variety matters. This page is a data reference, not dietary or medical advice.