Little species like anchovies and sardines are some of the best choices to keep your body — and the ocean — happy. These fish are packed with an outsized dose of vitamins and nutrients. They’re low on the food chain, so they take less resources than predators, to make the same amount of protein. And you’re in good company: Whales, dolphins, seals and seabirds all love little fish too.

Conscious cuisine

If you wrinkle your nose at anchovy pizza, or flinch at fishy Caesar salad, relax. You don’t have to eat little fish from a tin. Around the world, coastal cultures prepare snack-sized species in all kinds of ways.