Japanese seriola (Seriola lalandi) farms run by Kurose Suisan and Global Ocean Works are the first in the world to be certified to the Aquaculture Stewardship Council (ASC) standard. Yellowtail is the most widely farmed finfish in Japan and an integral and historical part of many coastal communities. Kurose Suisan achieved the certification in December 2017 after an independent assessment, following the ASC multi-site approach, of three sites – Kushima, Uchinoura and Nobeoka Farma – by SCS Global Services. The ASC Seriola and Cobia Standard, launched just over a year ago, addresses the key negative environmental and social impacts associated with seriola farming. The standard requires that farms preserve local habitats and biodiversity, minimise fish escapes, conserve water and water quality, and manage production with minimal use of therapeutics and antibiotics. The responsible sourcing of feed ingredients, including strict limits on the use of wild fish as an ingredient, and full traceability back to a responsibly managed source, are additional demands that farms are expected to fulfil.