This is one of the Stormwind City daily fishing quests, which can be used to improve fishing skill as well as contribute towards several Achievements.
Hey there, Angler! Arnold here tells me that you have been looking for a new fishing spot and I think I know just the place. North of Stormwind there is a great little spot called Olivia's Pond.
The pond is stocked with crystal bass every year but they are hard to catch. They only bite on a very specific type of bait... overgrown earthworms. If you search the shore around the pond, you should find plenty of worms to use as bait.
Did the bait work?
Those look like some nice bass, <name>. Let's fry em' up and see how they taste!
The Worms are indicated by sparkles from the ground only. You will get a buff called Worm Bait, which lasts 10 minutes. The Worms are apparently stackable.
Patches and hotfixes Edit
- Patch 4.0.3 (15-Nov-2010): Added.