for diamond and pearl there are 150 Pokemon u need to see .
in plat nium u neeed to see 210 Pokemon.
149 in the Sinnoh Pokédex. 493 in the National Pokédex.
there are 210 Pokemon in the sinnoh dex
in sinnoh 210
151
150 hope i helped :) Actually there are 151 pokemon in the Sinnoh Pokedex but you only have to see 150 to get the National Pokedex.
In the Sinnoh Pokedex, there are 493, from (#1) Turtwig to (#493) Arceus.
210 Pokemon in platinum, pearl, and diamond. :)
493
There're 156. National Pokédex nos. 494 to 649.
Same as PokemonPearl, 151 is the max number of Pokemon in the starter pokedex.
In the Sinnoh region there are 493. In the Unova region there are 649.
#30 in the Sinnoh Dex is Crobat. Catch a Golbat, which you can catch in many different caves, such as Victory Road, Lost Tower, Turnback Cave, etc. then evolve Golbat via happiness.