Excellent documentary on farmed and wild-caught fish regarding the effects of pollution, contamination, industrialisation, fraud, corruption, etc.
Focuses mostly on human health issues, but touches on the relevant environmental and other issues too.
TL;DW: Don’t consume farmed fish. Don’t consume big fish. Eat small fish.
Alternative links: https://redirect.invidious.io/watch?v=RYYf8cLUV5E
Salmon farming in Australia:
Salmon farming exposed: Does the industry’s ‘green image’ stack up? | Four Corners: https://invidious.snopyta.org/watch?v=xLIph7Ct-rQ