Case Study: How we can revive our fish stocks in less than a generation

Circular Economy Fish

We fish and kill females with eggs. It is madness. We don’t do that with any other meat production. Worse is that we target and catch the large fish. But isn’t that what we are supposed to do?

Female fish have exponentially more eggs as they grow, a fish of 1kg may have 2,000-3,000 eggs, a female of 10kg may have 1 million eggs. So we need to save the female with eggs, we need to save the big females as a priority. With line fishing (not nets), we can catch and release pregnant fish (if done well).

We also need to create a small zones (~5km). Known for where brooding occurs and make it so that no-one is allowed there, once the fish realise it is a safe haven for eggs. Once a year someone is allowed in for monitoring purposes.

In the case study, they regenerated stocks to 10 times what they were 25 years earlier.

More lessons can be learnt by looking at the whale. The whale uses air bubbles. Depending on the size of the bubble, the fish get swept up. A small fish will be lifted up, a bigger fish isn’t bothered, our grandma fish remains safe. It is physics.

Learn more:

Gunter Pauli Lecture – 1:08:30-1:17:30

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