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California roach (Hesperoleucus symmetricus) — Cyprinidae

California roach

Hesperoleucus symmetricus
Family: Cyprinidae
LC · Least Concern

The California roach (Hesperoleucus symmetricus) is a freshwater fish of the family Cyprinidae that grows up to 11 cm.

Length
11 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Sand / mud bottom
Danger
Harmless
Range
Endemic to California (USA); streams and rivers.
Edibility
Not eaten

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Description

The California roach is a small minnow (Cyprinidae) endemic to California. The species has a stocky, brown to silvery body and reaches about 11 cm. It inhabits rocky pools of headwaters, creeks and small to medium rivers and is remarkably tolerant of warm, oxygen-poor water, allowing it to survive in isolated pools. It is an omnivore feeding on algae, insects and small crustaceans. The fish lives in schools and can live to about five years. Because of its small size the species has no fishery value.

Frequently asked questions

How do you recognise the California roach?

The California roach has a torpedo-shaped body, is mainly brown and shows a plain pattern. Tolerates warm, oxygen-poor water and survives in isolated pools; endemic to California.

Where does the California roach live?

The California roach lives in fresh water and is mostly found around sand or mud bottom. Endemic to California (USA); streams and rivers.

How big does the California roach get?

The California roach grows to a maximum of about 11 cm. On average the species is around 8 cm.

Is the California roach dangerous to humans?

No, the California roach is harmless to humans. None required: this species is harmless to humans.

Is the California roach edible?

The California roach is not usually eaten.

More photos

California roach (Hesperoleucus symmetricus) — Cyprinidae — 2
iNaturalist ((c) Christian Schwarz, some rights reserved (CC BY-NC))
California roach (Hesperoleucus symmetricus) — Cyprinidae — 3
Yinan Li (CC BY-NC 4.0) via GBIF — iNaturalist
California roach (Hesperoleucus symmetricus) — Cyprinidae — 4
Wikimedia Commons — Kaldari (CC0)
California roach (Hesperoleucus symmetricus) — Cyprinidae — 5
Wikimedia Commons — John Otterbein Snyder (Public domain)
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All data

Identification

English name
California roach verified
Scientific name
Hesperoleucus symmetricus
Family
Cyprinidae
Other names
California roach verified

Appearance

Size class
Small verified
Max length (cm)
11.0 verified
Average length (cm)
8.2 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
No sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Sand / mud bottom sourced
Natural range
Endemic to California (USA); streams and rivers. inferred
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Algae, insects and small crustaceans sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
5.0 verified
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Tolerates warm, oxygen-poor water and survives in isolated pools; endemic to California. sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

More from the family Cyprinidae

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