|Above, a sushi meal in Tsukiji. Photo by Armand Vaquer.|
Some fish stocks are in crisis. This was caused by environmental changes or over-fishing. As such, these species are more expensive at your local sushi restaurant in Japan.
Thankfully, Tokyo Cheapo has an article on what is "sustainable" and affordable sushi in Japan.
They begin with:
Japan is the land of sushi (yes, yes, and vending machines), and if you’re here—whether for a week or a decade—chances are you’re going to partake in the tradition of raw fish. Japanese sushi is the best in the world, and it’s been an important part of the local palate for hundreds of years. But with global fish stocks in crisis, particularly the Pacific Bluefin tuna whose numbers have plummeted by 97%, you might find yourself thinking twice before you tuck into that sashimi platter. Here’s a quick guide to sustainable sushi in Japan, as well as other meals that are nicer to nature (and your bank balance).
To read more, go here.