These are very easy to catch,

I caught 59 of them in one hour.

I have 500 fishing skill with +25 pole and +100 lure.

I have epic flying mount.

I have "find fish" ability so i can see all the highland mixed schools on my mini map.

On top of that, I also just caught mr. pinchy, I guess i'm lucky cause i've probably only fished about 40 highland mixed schools total so far.

Selling the furious crawdad RAW on the AH for 40g a stack.

If your cooking is max'd and your fishing is max'd, I recommend selling your fish raw, People like to buy them to level their cooking.