How Goldfish Went From Pretty To Invincible And Back Again

Visit to get started learning STEM for free. The first 200 people will get 20% off their annual premium subscription and a 30 day free trial. We began keeping goldfish as pets more than 1,000 years ago, but their beauty wasn’t the only thing they had going for them. Goldfish had a lot of really weird biological traits that made them incredibly resilient. And in an unfortunate twist, we’re now breeding away the very traits that once made them nearly invincible. Hosted by: Stefan Chin (he/him) ---------- Support SciShow by becoming a patron on Patreon: ---------- Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás