Pandaria Fishing and Farming Tips
Visit Ben of the Booming Voice Daily
Visit Ben (NPC located at 58.8, 47.0 near Halfhill in Valley of the Four Winds) daily to get a new "fish of the day". Ben will tell you and show you where you can find special pools of fish. He can also pin the location on your map.
Farm Giant Mantis Shrimp and Reef Octopus at the same time
Reef Octopus and Giant Mantis Shrimp share the spawn points and are found in similar locations. You will typically see both available. If you are fishing for a particular one but can't find them, you should fish the one that is available so the needed one spawns.
Forager's Gloves and Fishing
Contrary to other information on the Internet, Forager's Gloves do NOT increase casting time while fishing. These gloves enhance the speed of primary gathering professions (such as mining, herb gathering, etc.).