They’re really in uncharted waters. The coastal country of Indonesia is milking its abundance of fish to compensate for a drastic cow shortage for programs like school lunches. As local fishermen off ...

INDRAMAYU, Indonesia—Grocery aisles are filled with a range of “milk” options, from almond to soy and goat to oat. But have you heard of fish milk?

I will always remember the fish stick nights of my youth. The smell of instant mashed potatoes would begin to fill the halls, and my head would rise from whatever homework it had sunk into, swimming ...