Originally Posted by Mad Cook
I have only limited knowledge of kosher rules but I'm confused about why tuna is not kosher in the US because it's sold without its skin and scales, if it's kosher if is sold with its skin and scales. That's if I've understood properly what you wrote.
In some cases, the answer is, it depends on the family's beliefs because different rabbis interpret some of the laws differently and some households are more strict than others.
The Torah does not explain why - it simply says that only fish with visible fins and scales are kosher.
Addie, leaving fins and scales on doesn't guarantee that the head was not cut off with a non-kosher knife. I have only ever heard that meat and dairy must be processed and cooked with separate utensils, not meat and fish.
This site has good information: http://m.chabad.org/library/article_...osher-Fish.htm