Lobster is near-pure lean protein — 15.9 g protein per 100 g. Protein synthesis plateaus at 1.6 g/kg/day (Morton, Br J Sports Med 2018). Per 100 g: 77 kcal, 1 g fat. Melted butter is where lobster meals pick up calories — log the butter separately.
How should I track Crayfish, raw?
Crayfish, raw is a good source of protein. For the most accurate tracking of Crayfish, raw, weigh it raw and boneless. Fish loses 15–25% of its weight during cooking as water evaporates (USDA cooking yield data). If you are using canned fish, the drained weight is what matters — the difference between oil-packed and water-packed can be 40–80 calories per can. A quick drain-and-weigh habit saves you from hidden calories. Also keep in mind that smoked or cured fish has different values than fresh due to moisture loss and added salt.