19highest level
Fought at Route 42.
This is around Beat Whitney — Goldenrod City Gym, badge 3 in the story — that page lists everything you can have caught by this point.
Types on this team: PoisonWater
| Pokémon | Moves | |
|---|---|---|
 | Qwilfish Lv 19 | Harden Minimize Water Gun Rollout |