[Joakal]

I don't think the data can solve it due to requiring to collect data on everything. The website is successful due to high price to goods ratio (lobster, big fish). It would be hard to track something like sardines for example.

I believe the better way is to introduce regulation that makes the distinction between hunting fish and farming fish. Hunted fish would be taxed to the extent that farmed fish would be cheaper (taxes go to making farmed fish cheaper, eg research or subsidies).

A similar regulation scheme is being implemented for taxing carbon emissions of electricity producers in favour for renewables. I've also proposed something akin to this for selling native animals in Australia in the bid to fight extinction [0].

[0] http://joakal.com/2011/06/28/animal-capitalist-conservation-...

[Tichy]

I recently saw a documentary about some farmed fish that gets fed shredded hunted seafood - everything the fishers haul from the sea, it gets poured into a gigantic shredder and fed to that farm fish. There was a representative of some green organization who almost cried when she saw that, as it is such a huge waste of bio diversity.

Just saying that farming fish does not necessarily solve problems. And if the hunted fish is not being sold, but turned into food for farmed fish, it might be difficult to tax.

[justincormack]

Farmed fish are already a lot cheaper, although only some sorts are widely farmed.