catfishvscrawfishWhich spelling fits?

Which to use

“catfish” and “crawfish” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#18,266
“catfish” frequency rank
#44,143
“crawfish” frequency rank
62409
confusion score

Side-by-Side Comparison

Feature catfish crawfish
Definition Any fish of the order Siluriformes, mainly found in fresh water, lacking scales, and having barbels like whiskers around the mouth. Any of various freshwater crustaceans: crayfish.

Where the eye mixes catfish and crawfish

Muted = shared; highlighted = the visual trap. They share 6 letters in sequence.

7 ch
catfish
8 ch
crawfish

Why the eye confuses catfish with crawfish

A purely visual mix-up. catfish (/ˈkætfɪʃ/) and crawfish (/ˈkɹɔˌfɪʃ/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 62409, derived from the frequency rank of both members and their visual similarity.

catfish is recorded at frequency rank #18,266, classified as anoun, pronounced /ˈkætfɪʃ/. crawfish is at rank #44,143, tagged as anoun, pronounced /ˈkɹɔˌfɪʃ/.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 62409, this pair ranks #88,676 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of catfish vs crawfish

Shared letters: acfhis. Private to "catfish": t. Private to "crawfish": rw.

"catfish" · 7 letters · shape CVCCVCC  ·  "crawfish" · 8 letters · shape CCVCCVCC

Known mistypes of this pair

  • catfishactfish · caftish · catffish · catfihs · catfishh · catfissh · catfsih · catifsh
  • crawfishcarwfish · ccrawfish · crafwish · crawffish · crawfihs · crawfishh · crawfissh · crawfsih

Frequently Asked Questions

Can "catfish" and "crawfish" be used interchangeably?
No. They are said differently (/ˈkætfɪʃ/ versus /ˈkɹɔˌfɪʃ/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
In ordinary English text, does "catfish" or "crawfish" show up more?
"catfish" is the more common of the two: it sits at frequency rank #18,266 in our English list, against #44,143 for "crawfish". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "catfish" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "crawfish" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #88,676 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "catfish" and "crawfish" also get mixed up with nearby pairs, the highest-scored neighbour is "crawfish vs crayfish". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #88,676 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list