Important notes on feeding Russian Blue cats:
1. Try to avoid feeding your cat bones, as they may injure its mouth or internal organs. If you must feed it bones, you can use a pressure cooker to soften or crush the bones and then add them to its food before feeding it to your cat.
2. Do not feed your cat any food with seasonings, as this may increase the burden on its kidneys and cause it to get sick. 
3. Seafood can easily cause skin inflammation in cats. You can let your cat eat a small amount first to see if there is any allergic reaction. If there is no reaction, you can feed it an appropriate amount.
4. Dried fish contains a lot of magnesium, which can easily induce urinary system diseases, so it should be fed to cats sparingly.
5. Cats have delicate digestive systems and should not be overfed, as this can easily lead to indigestion. They should be fed smaller, more frequent meals, and each meal should only be 70-80% full.