What to do with leftover baked fish ?

If it smells like fish I wouldn't eat it at all. But then it really depends on how it was cooked etc as to how long it will keep. Usually about 2 to 3 days for cooked fish unless smoked and cured which keeps for years.
 
I would us it to make fish pie if it is still OK. The other alternative is something like kedgeree.
 
Sure it could but I wouldn't grind it just flake it up a bit and perhaps do it like a crab cake etc.
 
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