Joseph Rehmann is looking back at a very eventful few years. Coming from a 'safe' job as CFO of a 700-employee fish farm in Ghana, he embarked on a risky new mission to set up the “most sustainable tilapia farm on the planet.”

And so far, things are looking good.

Tucked away on the shores of Kenya’s largest freshwater body – Lake Victoria – Rehmann and his business partner Steve Moran, an industry pioneer in African aquaculture, are now running a sizable aquaculture operation, which includes a hatchery, a genetics and broodstock unit, grow-out cages, a processing facility and a distribution arm.