With the Hoenn Dex, you need to have caught all 202 Pokemon to complete it.
With the Sinnoh Dex, you need to only have seen the 150 Pokemon to complete it.
Yes, it's true. You've got it correct.
How to change your username
How to add a user avatar
Why was my post hidden?
Flags vs Downvotes
Official PokemonDb League
Type a Pokemon name, type, move or ability to see instant results.