Just wondering

I was just wondering if any of you feed your pyr fish with his food.I was reading that fish once or twice a week was good for dogs.We saw someone walking a pyr yesterday and of course i just had to stop and see,even though they were strangers,lol.The dogs coat was comming out in handfuls and clumps and i was wondering if they are all like that all the time.I have no idea how much that dog is groomed ,it might have something to do with that.Anyway i was wondering if alittle fish added to the diet would help with the shedding.Don't get me wrong i don't mind shedding and i know when i get my pyr it will shed.I was just wondering if fish would give her a healthier coat.