Like it or not, our seafood increasingly originates not in the deep ocean but on fish farms hugging the coasts. Aquaculture already supplies about half of the world's seafood, and global production is going to have to more than double by 2050 to meet demand, according to the World Resources Institute.

The business opportunity here is tremendous. Thousands of operations around the world now produce huge numbers of salmon, shrimp, mussels, tilapia and catfish, to name a few fish species that thrive on farms.

Not without significant cost, though — from pollution to antibiotic overuse to slavery, the global industry is rife with problems. But there also plenty of examples of fish being farmed in a way that may not endanger wild populations, deplete the ocean of them for feed or generate a lot of nasty waste.

Enter Aqua-Spark, an investment firm headquartered in Utrecht, The Netherlands. It wants to lend a hand to the small-and-medium sized businesses committed to producing safe and environmentally conscious farmed fish. When it launched in December with $10 million ready to deploy, Aqua-Spark became the world's first investment fund focused on sustainable aquaculture. The money comes from 35 investors in seven countries — one is institutional, the rest are private individuals — who see an opportunity to make money farming fish in new, responsible ways.

On Thursday, Aqua-Spark named the first two recipients of its funds. One is a California-based biotech company called Calysta that's making a fishmeal substitute. The other is a tilapia operation in Mozambique called Chicoa Fish Farm that the fund hopes will be a model fish farm for all of sub-Saharan Africa. Together, they're getting $4 million.

via Investment Fund Pours Cash Into Cleaner, Greener Fish Farming | Hawaii Public Radio-HPR2.