Only feeding fish ?

So now that I’m trying to keep kibble chicken and egg free, I was just wondering if it was a good idea to only feed fish flavoured kibble ?
I mean should dogs eat some kind of (animal) meat ?

My friend had her elderly Setter on fish flavoured kibble for her last few years as everything else upset her stomach! I would assume it's ok as long as the kibble is well balanced

If the fish based food is good quality (I can't remember which food you use, but I'm sure it's a good one), I don't see why it can't be fed long term.

Thanks for your input 
I’ve just started this bag of salmon kibble so I have the time to see how we get on

I have my boy on a Purina HA diet and occasionally give him sardines in water and cooked haddock/cod.He loves it.

Hmmm ... might look into acana singles
I like the Carnilove but the 12kg bags are a pita. I would prefer to take smaller bags to change flavour more often.