It’s called “catfishing” because of a story popularized by the 2010 documentary film Catfish , where a husband compares deceptive online behavior to how catfish supposedly keep cod active during transport.

Quick Scoop: Where the name comes from

1. The documentary that started it

  • In 2010, the documentary Catfish followed Nev Schulman, who discovered that the woman he’d been talking to online was using a fake identity.
  • At the end, the woman’s husband tells a story: when cod were shipped long distances, people supposedly added catfish to the tanks so the cod wouldn’t get lazy and would arrive “fresh and lively.”
  • He uses this as a metaphor: some people are like catfish, keeping others on their toes by shaking up their lives, even through deception.
  • The film’s title Catfish and that metaphor turned “catfish” into slang for someone using a fake persona online, and “catfishing” for the act itself.

“Catfish” went from documentary title to everyday internet slang in just a few years.

2. The (mostly mythical) fish story

  • The shipping tale about cod and catfish is more legend than fact; it traces back to early 1900s fiction and essays, not real shipping practice.
  • Writers Henry Nevinson and Charles Marriott both used a similar story in 1913, and that narrative later resurfaced in Catfish as if it were true.
  • Even though the story is shaky, the image stuck: the “catfish” is the unsettling presence that keeps others moving, alert, and off-balance.

3. How it became everyday slang

  • After the film, MTV launched Catfish: The TV Show in 2012, where hosts investigate whether someone’s online partner is real or a “catfish.”
  • The show’s popularity pushed the term “catfishing” into mainstream language for online romance scams and fake profiles.
  • Today, “catfishing” usually means creating a fake online identity—often for emotional manipulation, attention, or financial fraud.

4. What “catfishing” means now (quick facts)

  • Fake photos or stolen pictures to appear more attractive or younger.
  • Fabricated backstories (jobs, locations, life details) to build trust.
  • Often tied to romance scams, emotional exploitation, or attempts to get money or sensitive info.

Mini FAQ

Is catfishing just using heavy filters?
Some people use “catfishing” loosely for extreme filters or misleading angles, but in a stricter sense it’s about a fundamentally fake identity, not just looking better in photos.

Is the fish story actually true?
There’s no solid evidence that catfish were routinely added to cod tanks to keep them active; that story is widely regarded as a colorful myth that turned into a metaphor.

TL;DR: It’s called “catfishing” because a 2010 documentary used an old story about catfish keeping cod active as a metaphor for people who use fake identities online, and the name stuck.

Information gathered from public forums or data available on the internet and portrayed here.