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Largescale stoneroller (Campostoma oligolepis) — Cyprinidae

Largescale stoneroller

Campostoma oligolepis
Family: Cyprinidae

The Largescale stoneroller (Campostoma oligolepis) is a freshwater fish of the family Cyprinidae that grows up to 22 cm.

Length
22 cm
Water
Freshwater
Diet
Herbivore
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Mixed bottom
Danger
Harmless
Range
North America: USA

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Description

The largescale stoneroller is a small minnow (Leuciscidae) from clear, flowing rivers and streams of the central and eastern United States. The species grows to about 22 cm and has a stocky, silver-brown body with an inferior mouth with a horny edge with which it scrapes algae from stones. As a bottom-oriented grazer it eats aufwuchs, algae and detritus; spawning males develop tubercles on the head. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Largescale stoneroller?

The Largescale stoneroller has an elongate, eel-like body and is mainly silver-grey.

Where does the Largescale stoneroller live?

The Largescale stoneroller lives in fresh water and is mostly found around mixed bottom. North America: USA

How big does the Largescale stoneroller get?

The Largescale stoneroller grows to a maximum of about 22 cm. On average the species is around 12 cm.

Is the Largescale stoneroller dangerous to humans?

No, the Largescale stoneroller 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.

More photos

Largescale stoneroller (Campostoma oligolepis) — Cyprinidae — 2
iNaturalist ((c) Cristian Hernandez, some rights reserved (CC BY-NC))
Largescale stoneroller (Campostoma oligolepis) — Cyprinidae — 3
iNaturalist ((c) jasonrl, some rights reserved (CC BY-NC))
Largescale stoneroller (Campostoma oligolepis) — Cyprinidae — 4
iNaturalist ((c) michael_vs8, some rights reserved (CC BY-NC))
Largescale stoneroller (Campostoma oligolepis) — Cyprinidae — 5
Jonathan Wilson-Thieroff (CC BY-NC 4.0) via GBIF — iNaturalist
Fin

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All data

Identification

English name
Largescale stoneroller sourced
Scientific name
Campostoma oligolepis
Family
Cyprinidae
Other names
Largescale stoneroller verified

Appearance

Size class
Medium verified
Max length (cm)
22.0 verified
Average length (cm)
12.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey sourced
Tail shape
Forked inferred
Mouth position
Inferior (downward) sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
North America: USA sourced
Origin
Native inferred

Behaviour & biology

Diet
Herbivore sourced
Diet (detail)
Algae, seaweeds and plant material inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred
levensduur_max_jaar
5.0 verified
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred

For anglers

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 verified
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 Campostoma

More from the family Cyprinidae

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