---
title: "Thickhead Chub"
description: "Opsariichthys pachycephalus — Fische. Opsariichthys pachycephalus is a species of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies."
canonical: https://animalchecklist.com/de/animal/thickhead-chub
last_updated: 2026-09-20
---

# Thickhead Chub

> Opsariichthys pachycephalus — Fische. Opsariichthys pachycephalus is a species of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies.

- Scientific name: *Opsariichthys pachycephalus*
- Category: `fish` (Fische)
- Habitats: `freshwater` (See & Fluss)
- iNaturalist observations: 1372
- Wikidata: [Q3764611](https://www.wikidata.org/wiki/Q3764611)
- iNaturalist taxon: [613288](https://www.inaturalist.org/taxa/613288)

## Names

- en: Thickhead Chub
- es: Pececillo de cabeza gruesa

## Countries with the most observations

TW (1269)

## Summary

Opsariichthys pachycephalus is a species of freshwater ray-finned fish belonging to the family Xenocyprididae, the East Asian minnows or sharpbellies. This species is endemic to Taiwan. It is one of the most common minnows of Taiwan, found in the entire western part of the island from sea level to 1200 m elevation. It is a small species reaching a maximum length of 16 cm (6.3 in) TL.

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

## Photo

![Thickhead Chub](https://animalchecklist.com/img/animals/thickhead-chub/medium.jpg)

Photo: Yi-fan翊凡 · CC0 · inaturalist — https://www.inaturalist.org/observations/384176476

## Machine access

`GET https://animalchecklist.com/api/v1/animals/thickhead-chub?lang=de` — see [openapi.json](https://animalchecklist.com/openapi.json).