Oh lame. Guess I won't be getting any then. I have zero interest in leveling fishing.
Nice thing is that now you can fish anywhere no matter what your skill - it'll take a bit longer for you to complete the daily as you'll get more garbage then fish, but doesn't hurt.
Now if mem serves, the fishing dailies do have minimum levels, but as for that, I'd recommend just finding yourself a zone with some pools that aren't contested and just fish for whatever's selling well on the AH.
Skilling up fishing like that does two things - 1) earns money while skilling and 2) gives you a chance at catching the turtle mount. If you're an NC pet fan then also skill up in the Dalaran sewers for a chance at catching the pet giant sewer rat.
I've had two, now I want to know if I've missed out on 400g or a hidden something or other?
Apparently the only reward is extra Dalaran cooking award so unless you're hard up for getting the chef hat and all your cooking recipes ASAP, I say go for the gold and AH them instead.