You know, I expected it to be a bit tougher. I had spent some time in the past working on One That Didn't Get Away, but I never really had the patience for it. Then, last week, when I won the fishing tourney, I knew I had to go back to that achievement. I did some research and found the best place to fish is in the starting areas of Elwynn or Mulgore, however, all you catch there are worthless fish. Why not fish in the Howling Fjord for the Dark Herring? All the other fish you catch there can be sold on the Auction House, so you can turn a nice profit while working on the achievement.
So I fished for a day there - about 3 hours - jumping from Fangtooth Herring school to Fangtooth Herring school (after all, only Fangtooth Herring can be turned into Dark Herrings). I didn't bother to have my cast land in the pool, but if it did, I fished it up, and if it didn't, I just hoped for a herring. When the pool was gone, I moved on. After no luck the first day, I sent the fish to my banker, ready for another day of fishing. Surprisingly, on my second day, there he was, the Dark Herring. I was only an hour or two into fishing (hint: turn down music and ambient sounds and turn sound effects way up - then you only hear the bobber) and I was quite happy to see him.
And there you have it...Salty Tiddlywinks. A couple more achievements done and a nice, shiny new title.