ヨワシ

Sun: When it’s in trouble, its eyes moisten and begin to shine. The shining light attracts its comrades, and they stand together against their enemies.

Moon: It’s awfully weak and notably tasty, so everyone is always out to get it. As it happens, anyone trying to bully it receives a painful lesson.

Ultra Sun: They’re weak, so they move in schools. However, they can also often be seen all alone, having strayed from the school.

Ultra Moon: When it’s in a jam, its shining eyes attract others of its kind. The light from its eyes is visible almost 25 miles away.

Sword: Individually, they’re incredibly weak. It’s by gathering up into schools that they’re able to confront opponents.

Shield: When it senses danger, its eyes tear up. The sparkle of its tears signals other Wishiwashi to gather.