The patch 3.1 public test realm data files contain references to distinctly dwarven fishing techniques. My hunch is that these probably relate to Ulduar, but I thought I'd post them here for the curious:
- Explosive Fishin' - Summons a dead fish. [63496]
- Fighting Fish - Increasing line tension. [62833]
- Fishing Hole Explosion - Causes a fishing hole to explode, scattering fish around the area. [63255]
- Reel In - Reels in your line, reducing the fish's Endurance by 10. [62806]