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Torrent sculpin (Cottus rhotheus) — Cottidae

Torrent sculpin

Cottus rhotheus
Family: Cottidae
LC · Least Concern

The Torrent sculpin (Cottus rhotheus) is a freshwater fish of the family Cottidae that grows up to 16 cm.

Length
15.5 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Solitary
Activity
Nocturnal
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Northwestern North America
Edibility
Rarely eaten

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Description

The torrent sculpin is a sculpin from northwestern North America, in drainages from British Columbia to Oregon. The species grows to about 16 cm and has a stocky body with a broad head, large pectoral fins and two oblique dark bars before the tail. Adapted to fast-flowing water it holds on among stones and gravel and hunts aquatic insects and small fish. The fish is harmless to humans and is assessed as Least Concern (LC) by the IUCN.

Frequently asked questions

How do you recognise the Torrent sculpin?

The Torrent sculpin has an elongate, eel-like body, is mainly brown and shows a marbled pattern. Broad head, large pectoral fins; clinging in rapids

Where does the Torrent sculpin live?

The Torrent sculpin lives in fresh water and is mostly found around sand or mud bottom. Northwestern North America

How big does the Torrent sculpin get?

The Torrent sculpin grows to a maximum of about 16 cm. On average the species is around 7 cm.

Is the Torrent sculpin dangerous to humans?

No, the Torrent sculpin is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.

Is the Torrent sculpin edible?

The Torrent sculpin is rarely eaten.

More photos

Torrent sculpin (Cottus rhotheus) — Cottidae — 2
iNaturalist ((c) Daniel, some rights reserved (CC BY-NC))
Torrent sculpin (Cottus rhotheus) — Cottidae — 3
iNaturalist ((c) Kai Victor, some rights reserved (CC BY-NC))
Torrent sculpin (Cottus rhotheus) — Cottidae — 4
Wikimedia Commons — Luxquine (CC BY-SA 4.0)
Torrent sculpin (Cottus rhotheus) — Cottidae — 5
iNaturalist ((c) Yinan Li, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Torrent sculpin verified
Scientific name
Cottus rhotheus
Family
Cottidae
Other names
Torrent sculpin verified

Appearance

Size class
Medium verified
Max length (cm)
15.5 verified
Average length (cm)
6.8 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown inferred
Pattern
Marbled sourced
Tail shape
Rounded inferred
Mouth position
Terminal sourced
Lips
Thin sourced
Barbels
No sourced
Dorsal fins
Two separate sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Natural range
Northwestern North America verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Aquatic insects and small fishes inferred
Social behaviour
Solitary sourced
Territorial
Yes sourced
Activity
Nocturnal sourced
Reproduction
Separate sexes sourced
Sexual dimorphism
No sourced
Seasonality
Mountain-stream sculpin; present year-round. sourced
Special features
Broad head, large pectoral fins; clinging in rapids sourced

For anglers

Edibility
Rarely eaten sourced
Fishing method
Bottom fishing with natural bait (worm, shrimp or fish) on or just above the seabed. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status. verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Cottus

More from the family Cottidae

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