This copy is for your personal, non-commercial use only. Distribution and use of this material are governed by our Subscriber Agreement and by copyright law. For non-personal use or to order multiple copies, please contact Dow Jones Reprints at 1-800-843-0008 or visit www.djreprints.com. https://www.wsj.com/articles/SB122290720439096481
![Mackerel Economics in Prison Leads to Appreciation for Oily Fillets - WSJ](https://cdn-ak-scissors.b.st-hatena.com/image/square/4293719682f1ee001640da44e615696ad9fa6ba3/height=288;version=1;width=512/https%3A%2F%2Fs.wsj.net%2Fpublic%2Fresources%2Fimages%2FOB-CL200_mackec_D_20081002030517.jpg)