# fish louse

> English word · Noun

## Definitions
1. Any aquatic crustacean which is a parasite of fish, typically attached to the skin or gills
2. Any aquatic crustacean which is a parasite of fish, typically attached to the skin or gills

## Etymology
From fish + louse.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/fish-louse