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.
You cannot find Nidoran in Pokemon Ruby.
It is impossible to catch a male or female nidoran in Pokemon Ruby. To get one you'd have to get it by trade.
Only On FireRed LeafGreen.
you can find the nidoran male and frmale in the safari zone. You can also find the male nidoran in route 21.
go to route 201 and use the pokeradar!! nidoran male is harder to find!!
map #3
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 Male and Female can be found in these places: The route west of viridian city and the safari zone.
You can find Nidoran in route 3 (sometimes even Nidorino\Nidorina) and the Safari Zone in Fuchia city.
At The Pokemon Safari In Fuschia City
you need to cheak your pokedex to find nidorian
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
Yes, the female nidoran is blue and male nidoran is purple