My kitty is on an all wet diet. He will ONLY eat FISH based foods for the last 4 months. Fancy Feast Savory Salmon (90%) of the time, or Weruva Mideast Feast (tuna & tilapia) & every now & then I can get a Wellness Chicken & Herring. Is it Ok to be feeding him so much fish? He was also borderline CRF at last blood test so I wonder if it is good or bad for his kidneys...His fur is the softest it's been & his flaky paw pads have really smoothed out. I know it's because his diabetes is under control now too, but I wonder if it's food related too. Basically I don't know if it's something I should be worried about overdoing.