It’s official: Fish pedicures aren’t just a bizarre beauty ritual with shady animal-welfare considerations, they’re also downright dangerous to your health, according to the U.S. Centers for Disease Control and Prevention. On Wednesday, the federal agency published a report by U.K.’s Centre for Environment, Fisheries & Aquaculture Science, which examined the types of bacteria associated with Garra rufa, an inch-long toothless carp that nibbles away at dead skin. Native to Southeast Asia, the so-called “doctor fish” soared in popularity in 2008, when salons across the nation began offering them as an alternative to razors for scraping away calluses.