If you have access to Two Island, look in the Cape Brink for Poliwhirl.
migrate it!
In the water
Using the good rod or super rod in vermilion city's small body of water will every now and then get you poliwag or even poliwhirl.
To get Pokemon firered on PC download a vba and Pokemon firered ROM
You can catch a Ho-Oh at Navel Rock in Pokemon FireRed.
You can catch Moltres at Mt. Ember Peak in FireRed.
you can catch a poliwag and evolve it into poliwhirl, and then use a water stone to evolve the poliwhirl into a poliwrath
you get jynx by trading with some guy Dontae in his house in cerulean city.
you can not catch him
You cannot get it in Pokemon FireRed. It doesn't matter because it is not necessary in Pokemon FireRed.
you can't catch any hoenn Pokemon in firered or leafgreen you must trade hoenn Pokemon from ruby or sapphire or emerald to leafgreen or firered.
You cannot catch it on Pokemon firered only on diamond pearl and thhe new one Pokemon platinum