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Definition of pearlfish
pearlfish
/ˈpɝːlˌfɪʃ/
pearl · fish
Plural:pearlfish
pearlfish Lexical Profile
CEFR
C2
Grade
11
Tier
3
Usage
Rare
pearlfish Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A small, slender, eel-like marine fish of the family Carapidae, notable for its symbiotic or parasitic habit of living inside the body cavities of invertebrate hosts such as sea cucumbers, starfish, and bivalves.
Example
"During the night dive, the researchers recorded a pearlfish emerging from the cloaca of a large sea cucumber to forage for food."
• Nearby Words
Word Origin & Etymology
A compound of 'pearl' and 'fish'. The name originated because early specimens were occasionally discovered dead inside oyster shells, completely entombed in a pearl blister formed by the host bivalve.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Pearlfish. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/pearlfish