They're perhaps even healthier for you and in plentiful supply. At less than $2 a tin for nice sardines packed in water, you can easily lunch on them three times a week for less than $6. The salmon and the tuna will thank you in the long run by bouncing back, and so will the oceans:
The study by Villy Christensen of the University of British Columbia's Fisheries Centre confirmed some previous indications that populations of predator fish at the top of the food chain, such as cod, tuna and groupers, have suffered huge declines, shrinking by around two-thirds in the past 100 years. More than half that decline occurred in the past 40 years.
Christensen found that the total stock of "forage fish", such as sardines, anchovy and capelin, has more than doubled over the past century. These are fish that are normally eaten by the top predators. "You remove the predator, you get more prey fish," said Christensen. "That has not been demonstrated before because people don't measure the number, they don't go out and count them."
For the rest of this fascinating story at The UK Guardian, go here.