# Spotted ratfish (*Hydrolagus colliei*)

Canonical page: https://creaturedata.com/animals/spotted-ratfish  
Data as of: 2026-11-11

The spotted ratfish (Hydrolagus colliei) is a fish in the family Chimaeridae, order Chimaeriformes and class Holocephali. It is also called the ratfish or white-spotted ratfish, and its scientific name carries the authority (Lay & Bennett, 1839). On the IUCN Red List it is assessed globally as Least Concern, which is not a threatened category.

## Quick facts

| Fact | Value |
|---|---|
| Weight | Not recorded |
| Length | Not recorded |
| Lifespan | Not recorded |
| Main food | Not recorded |
| Habitat | Not recorded |
| Young per litter or clutch | Not recorded |
| Reproduction | Eggs |
| Conservation status | Least Concern (IUCN) |
| Countries on record | Not recorded |

## Classification

- kingdom: Animalia
- phylum: Chordata
- class: Holocephali
- order: Chimaeriformes
- family: Chimaeridae
- genus: Hydrolagus
- species: *Hydrolagus colliei* (Lay & Bennett, 1839)

Synonyms: *Chimaera colliei*, *Chimaera media*, *Chimaera neglecta*, *Hydrolagus media*

## Common questions

### What kind of animal is the spotted ratfish?

The spotted ratfish is a fish in the family Chimaeridae, part of the order Chimaeriformes and class Holocephali.

### What is the scientific name of the spotted ratfish?

Its scientific name is Hydrolagus colliei, placed in the genus Hydrolagus.

### Is the spotted ratfish endangered?

No. It is listed as Least Concern on the IUCN Red List in a global assessment, which is not a threatened category.

### What other names does the spotted ratfish have?

It is also called the ratfish and the white-spotted ratfish.

## Sources

- [Catalogue of Life eXtended Release](https://www.checklistbank.org/dataset/316691), CC BY 4.0, 2026-10-16 XR. Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf
- [Wikimedia Commons](https://commons.wikimedia.org), per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed), 2026-11-11. Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence).
- [Wikidata](https://www.wikidata.org), CC0 1.0, 2026-11-11. Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service).
- [Wikipedia (English)](https://en.wikipedia.org), CC BY-SA 4.0, 2026-11-11. Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).

Cite as: Spotted ratfish (Hydrolagus colliei). Retrieved from https://creaturedata.com/animals/spotted-ratfish