We're constantly told by experts to eat more fish - its fats and nutrients are good for our health.
As of 2016, the most popular fish in Australia was salmon. We consumed almost 40,000 tonnes of it a year.
But what do we know about how salmon is farmed, what the fish are fed and what the environmental impacts are?
These issues have brought the industry to a flashpoint in Tasmania which has the biggest salmon farming area in Australia.
Thousands of jobs in that state depend on salmon farming and its future relies on a 'clean green' image.
But in this investigation, industry insiders and a trail of documents challenge that, questioning the use of chemicals, intensive farming and reveal a corporate culture far removed from the marketing image of a wild salmon leaping from a pristine river.
No one from the Tasmanian Government or the state regulator would be interviewed for this program.
You can find a series of statements from the government, industry, and others on our website here: ab.co/3dFfjv3
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