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Definition of swamp eel

swamp eel

Plural:swamp eels
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swamp eel Lexical Profile

• noun

1

Any of various elongated, eel-like ray-finned fishes of the order Synbranchiformes, characterized by the absence of pectoral and pelvic fins, found primarily in tropical and subtropical freshwater swamps, marshes, and slow-moving rivers.

Example

"Researchers are monitoring local waterways to prevent the invasive Asian swamp eel from disrupting native aquatic ecosystems."

Synonyms
View all synonyms for swamp eel

Word Nuance & Usage

Despite their common name and elongated bodies, swamp eels are not true eels (Anguilliformes) but belong to a separate order of ray-finned fishes (Synbranchiformes).

• Nearby Words

swallower
swallowtail
swamp
swamp eel
swamp lily
swamp milkweed
swamp rose

Word Origin & Etymology

A compound of 'swamp', denoting their preferred marshy, muddy freshwater habitats, and 'eel', referencing their long, snakelike physical resemblance to true eels.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Swamp eel. In Wordmom Dictionary. Retrieved Oct 15, 2026, from https://wordmom.com/dictionary/swamp eel
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