You can find Nidoran in route 3 (sometimes even Nidorino\Nidorina) and the Safari Zone in Fuchia city.
Only On FireRed LeafGreen.
To obtain a Nidoran (both male and female) in Pokemon Diamond and Pearl, you must use the PokeRadar in the grass of Route 201. It will take a while to find the two Pokemon (the female Nidoran is harder to find in Pearl and the male Nidoran is harder to find in Diamond), and they have a maximum level of three. Of course, you could always migrate the Nidoran to te Pal Park from Pokemon FireRed or LeafGreen. YOU COULD ALSO JUST PUT A NIDOKING/QUEEN IN THE DAYCARE WITH A DITTO AND WAHLA YOUVE GOT AN EGG! ACTUALLY A NIDOQUEEN CANT BREED
You can catch her on route 103, really rare though so look hard! :)
You can't get nidoran in emerald only in firered and leafgreen.
Nidoran Male and Female can be found in these places: The route west of viridian city and the safari zone.
Try looking on the route west of viridian city.
Nidoran evolves when he or she reaches level 16.
You can find Nidoran in route 3 (sometimes even Nidorino\Nidorina) and the Safari Zone in Fuchia city.
Only On FireRed LeafGreen.
Lv.16
You need to get a nidoran female first which only firered and leafgreen can get trade one to emerald then train it to level 16 to get nidorina use a moon stone on it to evolve it again to nidoqueen.
Goldeen/Seaking, Nidoran/Nidorino, Nidoran/Nidorina and Rhyhorn/Rhydon learn it.
There are a bunch of Pokemon that can evolve: Nidoran, Pidgey and plenty more.
bulbasaur, nidoran blue, doduo, meowth, picachu
To obtain a Nidoran (both male and female) in Pokemon Diamond and Pearl, you must use the PokeRadar in the grass of Route 201. It will take a while to find the two Pokemon (the female Nidoran is harder to find in Pearl and the male Nidoran is harder to find in Diamond), and they have a maximum level of three. Of course, you could always migrate the Nidoran to te Pal Park from Pokemon FireRed or LeafGreen. YOU COULD ALSO JUST PUT A NIDOKING/QUEEN IN THE DAYCARE WITH A DITTO AND WAHLA YOUVE GOT AN EGG! ACTUALLY A NIDOQUEEN CANT BREED
use a moonstone on a nidorina. catch nidoran female or nidorina in safari zone