Early Game:
* Old Rod: This rod is available very early in the game. You can get it from the Old Man in Slateport City after defeating the first gym leader, Roxanne. This rod lets you fish up basic Pokemon like Magikarp and Wailmer.
* Good Rod: This rod can be obtained from the Old Man in Slateport City after defeating the fourth gym leader, Flannery. This rod allows you to catch more powerful Pokemon like Goldeen, Staryu, and Carvanha.
Late Game:
* Super Rod: This powerful rod can be found in the "Lilycove Department Store" after you have earned 50 badges. It allows you to catch even more powerful Pokemon like Gyarados, Tentacruel, and Whiscash.
Fishing Spots:
* Slateport City: There are fishing spots by the water in Slateport City where you can use any of the rods mentioned above.
* Route 128: The river area of Route 128 is a good spot to fish, especially for the Good Rod.
* Route 119: There are several fishing spots on Route 119, a good place to use the Super Rod.
* Lilycove Harbor: The harbor area of Lilycove City is a great spot to fish with any rod.
Remember:
* The type of rod you use determines the types of Pokemon you can catch.
* The time of day and the location can also affect the types of Pokemon you encounter.
* You can buy more fishing rods from the "Lilycove Department Store" for a small amount of money.
Have fun fishing!