Thunder Salmon are Caught at the FAST rate of about 40% in Nedaria's Landing.
Then merely put Thunder Salmon in Tackle Box with Skinning Knife! You'll have Fish Eggs a plenty :)
The Salmon are Such a fast catch that you can do the combine at any level over 54: so what if you only succeed 25%, you can get many more.
;Plus you and get to 200 fishing along the way. Good Luck and Good Hunting.