Following World War II, freezers and frozen foods grew in popularity. Fish was an immediate success as a frozen item, but sales soon dropped because the fish tasted flat. The fish underwent chemical changes while being brought to shore and before they could be frozen.

Soon the fish processing companies decided to transport the fish live in super-large tanks until they reached the docks where they could be frozen. The fish still tasted flat after capture because they did not move around as they do in their natural habitat.

But a solution was found. What was easiest way, after capture, to keep the fish swimming as they do in their natural environment?

Just a guess, but did they add a small predator of some kind?

Thanks for ruining all of my fun by getting it right off the bat.

I mean, Wow, congrats on the quick solve!