I'm planning to start a small business on the side, and I saw this article on Entrepreneur magazine Philippines on how to make/produce sardines, tuna, and other small fish in jars to be sold wholesale or retail. Well, it teaches the basics, but I would like to search for more websites to broaden my knowledge on this little endeavor of mine. Aside from using small fish, I plan to use parts of bigger fishes, like salmon belly, etc. What other fishes/ fish parts can I use?