The term was invented to sell fish, by a distributor, in the early 2000s. It has never meant anything. The question it replaced is a much better one and almost nobody asks it.

Skin-on vs skinless fish can change how your meal tastes, cooks, and nourishes. Learn when to use each and how to make the most of both.

Oily fish vs lean fish is all about fat content and flavour. Oily fish like salmon and mackerel are rich and full of omega-3s, while lean fish like cod and halibut are lighter and versatile. Knowing the difference helps you choose the right fish for your next meal.

Haddock and cod look almost identical at the counter. Once you understand the differences in flavour, texture, nutrition, and sustainability, you'll know exactly which to reach for and why.