Ok, so you are looking for a food that is free of fish, peas, and potatoes that is acceptable for a large breed puppy, right?
You could try the Earthborn Holistic Meadow Feast. There is no fish or potatoes (white or sweet) in it. If there is no improvement, then it could be the peas.
If you don’t mind grains, Nature’s Variety Large Breed Puppy has no peas or potatoes but it does have salmon oil. Pinnacle Chicken & Oatmeal has no fish or peas but does have potatoes. The Victor Select Chicken Meal or Lamb Meal are both free of peas, fish, and potatoes. They are budget-friendly too. On Amazon the 40lb bag of Chicken Meal & Rice formula is $55.
You might have to go through the list of appropriate foods for large breed puppies and look at the ingredients in each one. Then you can determine if the price is right and if you can get your hands on it. I wish you the best of luck!
