Sardines vs Tuna

Sardines beat tuna on mercury and calcium, match it on protein, and lose on familiarity. Per dollar, budget sardines are usually the cheaper protein; per sandwich, tuna still wins for most people - which is why the swap works best as toast and pasta, not as a tuna-salad clone.

• Fishwife — best for beginners, premium tier
• King Oscar — best for beginners, mid tier
• Wild Planet — best for health optimizers, mid tier
• Nuri (Conservas Pinhais) — best for collectors, premium tier