Yes, tinned salmon mixed with vinegar, my dads favourite.
I buy tinned salmon, take out the backbone thing then just mash everything else up, bones, skin and all, with a bit of salad cream just to hold it together then spread it on a sandwich and pave the top with sliced pickled beetroot..yum.
Tinned tuna gets similar treatment but half mayo, half salad cream. Used to always put chopped onion and sweetcorn in too, but can't do that anymore.
Never saw tinned tuna as a child, I think it only became popular when I was in my teens.