You can get it in the safari zone or on route 3 from pewter city to cerulean city via mt moon
Yes, the female nidoran is blue and male nidoran is purple
you can find the nidoran male and frmale in the safari zone. You can also find the male nidoran in route 21.
Nidoran will evolve at lv 16
A little girl in one of the underground paths will ask for a nidoran male if you give her one you will recieve a nidoran female.
Nidoran evolves when he or she reaches level 16.
You can't get nidoran in emerald only in firered and leafgreen.
I'm assuming you want to know what level Nidoran evolves in Soul Silver. Nidoran (both male and female) evolve at level 16.
Pokemon Red/Blue Nidoran (male) learns 'Double Kick' at level 43 Nidoran (female) learns 'Double Kick' at level 43 Pokemon Yellow Nidoran (male) learns 'Double Kick' at level 12 Nidoran (female) learns 'Double Kick' at level 12 Pokemon Silver/Gold/Crystal Nidoran (male) learns 'Double Kick' at level 12 Nidoran (female) learns 'Double Kick' at level 12 Pokemon Ruby/Sapphire/Emerald Nidoran (male) learns 'Double Kick' at level 12 Nidoran (female) learns 'Double Kick' at level 12 Pokemon Diamond/Pearl/Platinum Nidoran (male) learns 'Double Kick' at level 9 Nidoran (female) learns 'Double Kick' at level 9
NIDORAN evolves into NIDORINO and it evolves into NIDOKING. It is a great Pokemon infact i am training one, good luck.
Nidoran (Female)- Route 35, Route 36 Safari Zone Nidoran (Male)- Route 35, Route 36 Safari Zone
nidoran female evolves into nidorina at 16. after that u need a moonstone to evolve into Nidoqueen. same story for nidoran male. 16 and then moonstone for nidoking
Both the female and male Nidoran can be found via Pokeradar on Route 201.