catfish

American  

[kat-fish] / ˈkætˌfɪʃ /

noun

plural

catfish,

plural

catfishes

1. any of the numerous fishes of the order or suborder Nematognathi (or Siluroidei), characterized by barbels around the mouth and the absence of scales.

2. a wolffish of the genus Anarhichas.

3. any of various other fishes having a fancied resemblance to a cat.

4. Slang. a person who assumes a false identity or personality on the internet, especially on social media websites, as to deceive, manipulate, or swindle.

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verb (used with or without object)

1. Slang. to deceive, swindle, etc., by assuming a false identity or personality online.

   He fell in love with her online before he realized he'd been catfished.

catfish British  

/ ˈkætˌfɪʃ /

noun

1. any of numerous mainly freshwater teleost fishes having whisker-like barbels around the mouth, esp the silurids of Europe and Asia and the horned pouts of North America

2. another name for wolffish

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Usage

What does catfish mean? Aside from being a delicious kind of river fish, a catfish is a slang term for someone who seduces a person with a false identity online.

Etymology

Origin of catfish

First recorded in 1605–15; cat + fish

Example Sentences

In Brazil's southern Pantanal, a rare pale giant otter feeds on a catfish.

From BBC • Mar. 25, 2026

The toothless bottom-feeder, which looks like a prehistoric catfish and can weigh over 200 pounds, has been overfished globally.

From The Wall Street Journal • Feb. 20, 2026

In frustration, Abbie posted on Facebook saying David Graham was a catfish and that he was actually a woman called Adele Rennie.

From BBC • Jan. 9, 2026

This group spans more than 10,000 species, from catfish to aquarium favorites such as tetras and zebrafish.

From Science Daily • Nov. 3, 2025

She struggles through the difficult pregnancy, working in a refrigerated fish factory, packing and weighing salmon and catfish all day.

From "Enrique's Journey" by Sonia Nazario