Note about Big Fishing:
All the buying up of legendary fish was useless! That's what I get for speculating. At least it ddin't cost me much. I'm going to keep them anyway, never know.
But apparantly big fishing is set up based on the Japanese lore that a single giant fish is supposed to be the protector of an individual body of water, and to catch this fish makes you a legend.
So in tradition, there is a "King of the XYZ" fish in every body of water. For instance, Glimmerscale is the king of the copperfish, found in Nophica's Wells. Mud Golem is the king of Mud Crab, found in the waters of the Footfalls.
Cool, but that doesn't give me anything other than pokemon incentive to catch them all. I was hoping for incentive. The market is driven by incentive. Oh well