---
title: "Eastern Triangle Butterflyfish"
description: "Chaetodon baronessa — Vissen. The eastern triangle butterflyfish (Chaetodon baronessa), also known as the baroness butterflyfish, is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae."
canonical: https://animalchecklist.com/nl/animal/eastern-triangle-butterflyfish
last_updated: 2026-09-20
---

# Eastern Triangle Butterflyfish

> Chaetodon baronessa — Vissen. The eastern triangle butterflyfish (Chaetodon baronessa), also known as the baroness butterflyfish,  is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae.

- Scientific name: *Chaetodon baronessa*
- Category: `fish` (Vissen)
- Habitats: `sea` (Zee en kust)
- iNaturalist observations: 2069
- Wikidata: [Q947271](https://www.wikidata.org/wiki/Q947271)
- iNaturalist taxon: [97146](https://www.inaturalist.org/taxa/97146)

## Names

- en: Eastern Triangle Butterflyfish
- de: Baroness-Falterfisch
- es: Pez Mariposa Oriental
- fr: Poisson-papillon baronne

## Countries with the most observations

ID (517), PH (343), FJ (285), AU (136), SB (60), NC (52), MY (50), VU (34), PG (33), TL (18), PW (15), TW (8)

## Summary

The eastern triangle butterflyfish (Chaetodon baronessa), also known as the baroness butterflyfish,  is a species of marine ray-finned fish, a butterflyfish belonging to the family Chaetodontidae. It is found in the central Indo-West Pacific region from the Cocos-Keeling Islands and Indonesia in the eastern Indian Ocean to Fiji and Tonga, north to southern Japan, south to New Caledonia and New South Wales in Australia.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Eastern_triangle_butterflyfish

## Photo

![Eastern Triangle Butterflyfish](https://animalchecklist.com/img/animals/eastern-triangle-butterflyfish/medium.jpg)

Photo: Justin Philbois · CC0 · inaturalist — https://www.inaturalist.org/observations/243962763

## Machine access

`GET https://animalchecklist.com/api/v1/animals/eastern-triangle-butterflyfish?lang=nl` — see [openapi.json](https://animalchecklist.com/openapi.json).