Raw Food: Info on "Fresh" Sardines?

I'm searching and searching online and can't find a whole lot of information, so I'm hoping someone here has some input.

One of our stores has a great deal on frozen "fresh," whole sardines - innards and all. They're sold for human consumption complete with instructions on how to clean them and cook them properly. Now, since we're going raw soon, and these are baby furballs eating this, we would need to grind it up so they'd get a little of everything in each serving (which would be one small serving every couple of days to start out with, most likely). Anyway, I can find all of the information in the world on feeding a cat CANNED sardines, but not raw. Anyone have any idea what the nutritional content of these suckers is? We'll be feeding a variety of raw food, but I'm curious about how much of this fish the cats can have.

If anyone has any info, I'd be incredibly thankful!!

RAW FISH in general is a NO NO ... cooked sardines are fine...

my raw advocate vet uses cooked sardine

May I ask why (respectfully - I really just want to know why)? Is it the issue of parasites? If so, what are the parasites specific to this fish and these parasites roles in a host feline? If not, can you give me an idea of what I should be researching specifically? ETA: I ask because everything I'm finding so far has to do with canned sardines. Oh, and these fish are sitting in my freezer, so I'm curious to know what negative factors (provided these factors were once living ) could live through a grind and thaw.

Thanks for the response!! I do appreciate it.

parasites and heavy metals ( thou these are more likely in bigger fish for metals)and bacteria not found in a cat gi tract

Ahhh. Okay. I always thought that the heavy metals was an issue with the canning process. It was never a big deal to me so I never looked it up. Awesome though - thanks for the info.