Pokémon Go Tricky Pokémon event guide: Field Research, Stunfisk, and Shiny Croagunk

To celebrate April Fool’s Day, some Pokémon that have trickster personalities are spawning in abundance in Pokémon Go.

The event lasts from April 1 at 8 a.m. until April 7 at 10 p.m. in your local time.

This includes Gastly, Haunter, Ditto, Voltorb, Foongus, Croagunk, and Aipom. Stunfisk is also making its Pokémon Go debut during this time. For those who don’t have a Ditto, which disguises itself as other Pokémon until after you catch it, this may be a good opportunity to fill in that spot on your Pokédex.

Throughout the event, Croagunk and Aipom will appear to photobomb you when you take AR photos, instead of Smeargle.

Croagunk, the poison- and fighting-type frog, will also be appearing Shiny for the first time, turning from its usual blue color to a neat teal. Toxicroak turns from blue and orange to a lighter blue with pink accents.

Image: Niantic via Polygon

There’ll also be some limited-time Field Research to celebrate the Pokémons’ antics.