Early Game:
* Route 34: This is the easiest place to find Poliwag. It's common in the tall grass here.
* Route 35: You can also find them here, but they are a bit less common than on Route 34.
Later Game:
* Lake of Rage: After defeating the Elite Four, Poliwag can be found in the lake.
Tips for Catching Poliwag:
* Use a Poke Ball: A standard Poke Ball is sufficient for catching Poliwag, but you can use a Great Ball or Ultra Ball for a higher catch rate.
* Lower its HP: Weaken Poliwag before throwing a Poke Ball to increase your chances of capturing it.
* Use False Swipe: This move will lower Poliwag's HP to 1 without risking a knockout.
* Consider a Status Condition: Using moves like Sleep Powder or Thunder Wave can make catching Poliwag easier.
* Have Patience: Catching Pokemon takes patience. Keep trying, and eventually you'll catch Poliwag.
Important Note: Poliwag's catch rate is relatively low, so don't be discouraged if you fail to catch it on the first try. Just keep trying, and you'll be able to add this Water-type Pokemon to your team.