These are the different types of Boo.
“Fishin' Boo is a type of Boo with a fishing pole. They resemble Lakitu. It is found in Super...Fishin' Boo
“Anuboos are a sub-species of Boo that appears in Mario& Luigi: Superstar Saga in Teehee Village...Anuboo
“Dark Boos are purple Boo-like enemies appearing in Paper Mario: The Thousand-Year Door, Super...Dark Boo