Quests / NPCs

The merchant is the most important NPC in " FISCH ", he is the only NPC in the game that you can sell your fish to.
Found on most islands

Phineas, the fellow fisherman who will give you 25 bait creates  after finishing his quest.
Found on Moosewood

The Angler, the daily quest NPC. He hands out tasks to fellow fish enthusiasts to complete. He has a chance to give you special items in return after finishing his tasks.
Found on some islands

Agric, a humanoid mushroom waiting for someone to avenge his family. He will ask you to catch an alligator in return you will be awarded the " Fungal Rod ".
Found on Mushroom Swamps

Cole is a miner who spends most of his time underneath the Statue of Sovereignty. For 400C$  he allows you to enter the keeper's altar.
Found at the Statue of Sovereignty

The Shipwright,  the NPC  sells boats to fellow fishers.  People always wonder where he gets his boats from...
Almost all islands

Ashe is found near the pond at Roslit Bay, she has a liking to albino fish.
Found on Roslit Bay.

Merlin The Magist, an old wizard located in his house above the cliffs of Sunstone Island. He sells enchant relics for 11,000C$. In addition he supplies luck boost for 10 minutes at the cost of 5,000C$.  
Found on Sunstone.

After finding The Orc, he will ask you to fish for  a pufferfish. In return he will give you the " Magma Rod ", after finishing hes questline.
Found on Roslit Bay.

Wilson will ask for your help to find his lost fishing rod. In return, he will reward you with 25 common crates.
You can find him at Snowcap. 

Tutorial NPC
Found on Moosewood

After talking to Caleia, she will ask you to complete 70% of your bestiary. If you meet this requirement, she will offer you the "Destiny Rod" for 190,000 C$.
You can find her at The Arch. 

The Appraiser can increase or decrease the weight of your fish and has a small chance of granting them a mutation.

Found on Moosewood

These keepers can be found offering the service of spawning on the island you choose
Found on most island

Alfie the blacksmith is a humble man who offers three rods for you to choose from (steady, fortune, and rapid)
Found on Roslit Bay

The traveling merchant visits any island with a dock, offering a variety of items, including exclusive ones like the mythical rod.
You can find him at the docks of the islands. 

Synph is the merchant who resides in the ocean's depths among the crystals. He offers the nocturnal rod for 11,000C.
Found in the Vertigo area. 

The lantern keeper gives you a random colour lantern with a very rare chance of giving the Fairy Lantern which will reward you with " The Holy " title
Found on Moosewood