The daily fishing quest from Marcia Chase (53,65), by the fountain in Dalaran was Dangerously Delicious today. For this one you need to go into Wintergrasp and catch 10 Terrorfish. You are flagged for PvP (Player versus Player) the whole time you are in Wintergrasp.
I stuck to my original plan on Gomorra and took the flightpath to Fordragon Hold then flew over to the southeast corner of Wintergrasp where I got my 10 Terrorfish in less than 5 minutes. Instead of hearthing I decided to go see if I could find the flight path in Wintergrasp. I have it on Wranngar from fighting in there but have never fought in there on Gom. It took me a few minutes but I found it and flew back to Dalaran to turn in. We were in control of Wintergrasp at that time. I turned it in but didn't get anything great in my Bag of Fishing Treasures.
When it was time for Wranngar to do it I decided to fly right to the flight path in Wintergrasp and try fishing in the water right there. When I got there Wintergrasp was contested which means the Horde and Alliance were fighting over it. There were a lot of other people there fishing too but a lot of room so not really crowded. Around the time I got my 5th Terrorfish the Horde took control of Wintergrasp. I caught the last 5 I needed while the Horde controlled Wintergrasp, then flew back to Dalaran and turned in. Wrann didn't get anything worth mentioning in his Bag of Fishing Treasures either.
I would recommend, if you have the flight path, that you just fly right there and fish, if not, fly to Fordragon Hold and then fly over to the southeast corner of Wintergrasp to fish, then you can hearth out or go find the flight path. I didn't get the coords of the flight path but it is on the eastern side right near the GY.