Please advise if it's healthy to eat fish on a daily basis?

Which type of fish?: Fish with very high potential mercury levels include: Shark, Swordfish, Marlin, King Mackerel, Big Eye & AHI Tuna, Orange Roughy & Tilefish. Limit intake of Yellow fin and White Albacore Tuna, Spanish & Gulf Maceral, Group, Bluefish & Chilean Sea Bass. For healthier mercury levels try: Crabs, Crawdaddies, Haddock, Flounder, Salmon, Shrimp, Oysters, Anchovies, Herring, Mullet, Sole, Freshwater >