whatuknow wrote:
And what lvl do you need to catch them. just wondering
Jasmine already listed the money fish (for Azeroth), so I'll concentrate on the second part. Today I went to Menethil Harbor with a toon that had a skill level of 75 fishing. I didn't use any lures, and caught 4 Oily blackmouth and a stranglekelp out of a fishing node. There were lots of "Your fish got away!" messages, indicating that I was on the raw edge of acceptable. Since you can also find Firefin snapper there, I'd say that 75 skill should be good enough to get you money fish (with less messages if you use a lure). This ame toon got from 50 to 75 in Darkshore, and hardly ever got those messages - there are Oily Blackmouth there, too.
When you fish the Barrens, 75 seems like it would also be the lowest useable skill necessary. However, in The barrens, you should also be aware that the oases that contain deviate fish are not the place for a level 5 too with 75 skill in fishing to go to. There are just too many L10-17 critter around them that will want to make lunch of a lowbie, but you could probably be able to fish them as a level 13 or so. Blackmouth pools are occasionally found at Ratchet, and those are safe for any level.