A nine-year study by the University of British Columbia has found that 90% of small fish caught in the world’s oceans every year such as anchovies, sardines and mackerel are processed to make fishmeal and fish oil.
28 miliion tonnes consumed According to the study, factory-farmed fish, pigs and poultry are consuming 28 million tonnes of fish a year, or roughly six times the amount of seafood eaten by Americans. The study’s findings, to be published next month, warn this use is unsustainable, given current rates of global over fishing and increasing threats to global food security.
University of Columbia senior researcher Jacqueline Alder said: “Society should demand that we stop wasting these fish on farmed fish, pigs, and poultry. Although feeds derived from soy and other land-based crops are available and are used, fishmeal and fish oil have skyrocketed in popularity because forage fish are easy to catch in large numbers and, hence, relatively inexpensive.”
Current figures show 46% of fishmeal and fish oil is used as feed for aquaculture, 24% for pig feed and 22% for poultry.
Global taskforce The US-based Pew Institute for Ocean Science Institute, which funded the research, plans to set up a global taskforce of leading scientists and fisheries policy experts to find new ways of making forage fisheries more sustainable.