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Unfortunately humans like to eat predatory fish - salmon, tuna, etc. So although farming would be a way forward most farming needs large-scale industrial fishing to support it. The pet food industry also has the same problem.

Moving farming to vegetarian species like tilapia would solve this but it's going to take a monumental effort to change the attitudes of generations.

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Does that imply that some tilapia is raised sustainably? I can live with tilapia. I'd like herring or sardines better, are they low enough in the food chain to harvest sustainably? I can't handle vegan though, I'll switch to cannibalism before trying that again.

Tilapia farms are mostly disgusting, unfortunately. Hopefully it can be done cleaner. If you look into it, they are often cesspools of feed sediment, waste, and antibiotics. The runoff is terrible for surrounding life. The incredibly heavy use of antibiotics is seriously problematic.

I know the united states and Australia have some cleaner operations, but they’re much lower density and nowhere near as profitable. I’m personally fine with that, but I don’t think most people are. Hence the constant races to the bottom

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