is it ok to feed my turtle canned tuna or salmon?

  i ran out of food and needto feed my turtle
There are many healthier choices than the options you have listed.



Try lettuce, carrots, or and other green vegetables.



Try http://www.redearslider.com



At that site there are lists of what is good for your turtle to eat.
It won't kill the turtle but there are healthier foods. Try earthworms, liver dusted in bone meal, or bait fishes. Vegetables are only for adult turtles.