If you want to have some kind of guide to making somewhat more responsible choices of wild caught fish you can use fish base.org and check their resilience and vulnerability estimates to help make fish choices. Scroll down each fish page towards the bottom to see numbers.
This one looks ok:
http://fishbase.org/summary/SpeciesS...718&AT=sailfin
Not as good:
http://fishbase.org/summary/SpeciesS...D=1257&AT=tang