# bannerfish

> English word · Noun

## Definitions
1. A large sailfish of the species Istiophorus platypterus, of the swordfish family, with a broad banner-like dorsal fin
2. Any of several species of butterflyfish in the genus Heniochus (order Chaetodontiformes) that superficially resemble the Moorish idol (Zanclus cornutus, order Acanthuriformes), though not closely related.

## Etymology
From banner + fish.

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