Photo of microalgae by CSIRO ScienceImage via WikiMedia Commons

We’ve known for some time that lots of fish food used in pisciculture is actually just wild fish, whether processed or not. Conservation Magazine is reporting that microalgae may provide the solution for sustainably feeding fish in farms:

Aquaculture could play a key role in sustainably feeding our growing planet. The problem is that when it comes to feeding the fish, it seems hard to hit the mark on sustainability. Fish oil and fishmeal are draining the oceans of ecologically important forage fish. But when the aquaculture industry substitutes these marine-based foods with vegetable oils and grains, they are driving an enormous amount of additional farming, with all its attendant impacts on the environment. What’s more, this vegetarian diet produces fish that are lacking in the marine omegas that are so important for human health.

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