I would eat it I buy fresh salmon myself but that one sounds fine, the only question I think would be -product of china- I presume it means cheaply prepared there, not the most reliable place for food prep. I don't think.
My daughter was just the same. She went vegetarian for at least a couple of years and she got sicker and sicker, same symptoms as you, acne, depression etc. went back to meat and doing really well now.
Started Primal June 2012 at 148.5lbs, and 5' 1", reached goal weight in 5 months.
Lowest weight 93lbs - too thin. Now stable at around 100lbs much better weight for me at my age.
Primal, minus eggs, dairy and a myriad of other allergens.