What do you usually do with left over food in particular.
Do you make something out of it or just toss it in the bin?
Is it okay to recook left over fish?

Also, let me know if there are any potential dangers of food poisoning known to anyone.

You could make cakes out of the left-over fish by using some eggs, minced green onions, minced red bell peppers, lemon juice, bread crumbs, mayonnaise and cayenne pepper.
Shred the fish with a fork. Use eggs for coating & bread crumbs for rolling before frying

Fish is fine to eat as leftovers, as long as it's eaten in a timely manner. And like most meats, making a new dish out of the leftovers isn't too hard.

* make into tacos
* crumble over a salad
* make into a spread, like tuna salad

I generally don't use left-over fish for preparing a new dish all over.
If something is left, I just put it in the refrigerator and have it within a maximum of two days.