
The best moveset for Stunfisk in the current competitive meta typically features the moves Thunder, Thunderbolt, Protect, Earth Power.
In the Pokémon Champions meta, Stunfisk can be countered by exploiting its weaknesses (grass 2x, ground 2x, ice 2x, water 2x) and using effective check/counter teams.
The best item for Stunfisk is typically Life Orb, based on high-level tournament and ladder stats.