Here are some possibilities:
* Fish oil: This is a common supplement for dogs. It's rich in omega-3 fatty acids which are beneficial for skin and coat health, joint mobility, and overall well-being.
* Fish-based dog food: Many dog foods contain fish as a protein source. This can be a good option for dogs with allergies to other protein sources like chicken or beef.
If you're looking for a specific product or supplement, please provide more information.
Important Note: Before giving any supplements or changing your dog's diet, it's essential to consult your veterinarian. They can advise you on the best options for your individual dog's needs.