Zeal Natural Hoki Fish Oil Supplement for Cats Dogs (225ml)Zeal Pure Natural New Zealand Hoki Fish Oil is one of the few fish oils in the world that is totally pure. It is extracted from Hoki fish, wild caught in deep, cold pristine waters off the coast of the South Island of New Zealand, some of the cleanest oceans on the planet. The New Zealand government has many regulations and a strict quota system in place that help to protect the environment, prevent pollution and ensure that the fish populations are