You can get one in Fuchsia City at the house beside the wardens house. behind the house you can catch a Poliwag in the pond.
Hope this helps. :)
You can find Krabby in Route 12 and Route 13by using the Super Rod or Good rod.
go to fuchsia city and find the wordens house and next store the talk to the guy and he gives you the good rod
Ultra rod is not available in Leaf Green. The super rod is the best rod in the game.
Psyduck is in firered not leafgreen you can find it using a good or super rod in the safari zone.
a level five at fushia down below with good rod not helpful right
There is no ultra rod only old rod. good rod, and super rod
The good rod is in Fuschia city next to Warden's house.
Yes by good rod or super rod
The Good Rod is a key item given to you by a fisherman inside a house just to the right of the Safari Warden's home in Fuchsia City.
Use a good rod where you can find horsea use your pokedex if you seen one already.
Go to fuchsia city and find the warden's home go into the house right next to it and talk to the fisherman say yes to his question to receive the good rod.
It is at vermilion city.