Nairobi, Jan. 24 -- When Elijah Murithi grew bananas in the 1980s and 1990s, Kenya's increasingly erratic weather meant he could rarely make steady income from the thirsty crop.

Prolonged dry spells killed Murithi's young plants and long, intense rainy periods produced a glut of bananas that forced him to lower his prices to sell them in the market.

Even when he shifted to coffee, which needs less water, the farmer still struggled to produce reliable yields.

But that changed in 2021 when he added an unusual crop to his farm: fish.

A fishpond - with more than 1,500 tilapias - allows him to harvest rainwater during heavy rains and use some of it to irrigate his crops when dry spells hit.

Decent living

Now, he said, he makes a decent l...