Dragonite

Dragonite = Pokemon dex #149 (not Legendary)

Opendex
= Pokemon that you already have/registered in your Pokedex, displayed as an image with the Pokemon's details

Non-Opendex
= Pokemon that you don’t have yet/not registered in your Pokedex, displayed as a black silhouette (meaning you’ve seen it in raids/gyms) or as a Pokedex number

Trade Requirements for Opendex
1. Must have 100 Stardust
2. Must have the Pokemon registered in your Pokedex

Trade Requirements for Non-Opendex
1. Must have 20,000 Stardust
2. Still a shadow or you don’t own the Pokemon yet

Note: Tip for Non-Opendex (Legendary Pokemon/Shiny Pokemon) – Willing to become friends up to Ultra Friend level to reduce Stardust cost (80,000 Stardust). If you're willing, buy the cheapest or your favorite Opendex Pokemon from Wantau Store, then message the seller to request a 30-day friendship (Ultra Friend).

How to Trade Opendex or Non-Opendex? Check the link below: