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Redfin shiner (Lythrurus umbratilis) — Cyprinidae

Redfin shiner

Lythrurus umbratilis
Family: Cyprinidae
LC · Least Concern

The Redfin shiner (Lythrurus umbratilis) is a freshwater fish of the family Cyprinidae that grows up to 9 cm.

Length
8.8 cm
Water
Freshwater
Diet
Omnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Mixed bottom
Danger
Harmless
Range
Central and eastern US; quiet to flowing pools of upper reaches, creeks and small rivers.
Edibility
Not eaten

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Description

The redfin shiner is a small cyprinid from the central and eastern United States. The species grows to about 9 cm and has a slender, silvery-bluish body; breeding males develop reddish fins and a steel-blue sheen. It inhabits quiet to flowing, often turbid pools of headwaters, creeks and small rivers. As an omnivore it feeds on insects, small invertebrates, algae and detritus. It is an active schooling fish that often lays its eggs at the nests of sunfishes. Owing to its small size the species is harmless to humans.

Frequently asked questions

How do you recognise the Redfin shiner?

The Redfin shiner has an elongate, eel-like body, is mainly silver-grey and shows a plain pattern. Spawning males with reddish fins and a steely blue sheen; often deposits eggs at sunfish nests.

Where does the Redfin shiner live?

The Redfin shiner lives in fresh water and is mostly found around mixed bottom. Central and eastern US; quiet to flowing pools of upper reaches, creeks and small rivers.

How big does the Redfin shiner get?

The Redfin shiner grows to a maximum of about 9 cm. On average the species is around 5 cm.

Is the Redfin shiner dangerous to humans?

No, the Redfin shiner is harmless to humans. None required: this species is harmless to humans.

Is the Redfin shiner edible?

The Redfin shiner is not usually eaten.

More photos

Redfin shiner (Lythrurus umbratilis) — Cyprinidae — 2
iNaturalist ((c) pmk00001, some rights reserved (CC BY-NC))
Redfin shiner (Lythrurus umbratilis) — Cyprinidae — 3
iNaturalist ((c) Michael Scherer, some rights reserved (CC BY-NC))
Redfin shiner (Lythrurus umbratilis) — Cyprinidae — 4
Joshua Ebright (CC BY 4.0) via GBIF — iNaturalist
Redfin shiner (Lythrurus umbratilis) — Cyprinidae — 5
iNaturalist ((c) fishecke, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Redfin shiner verified
Scientific name
Lythrurus umbratilis
Family
Cyprinidae
Other names
Redfin shiner verified

Appearance

Size class
Small verified
Max length (cm)
8.8 verified
Average length (cm)
5.3 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey 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
Mixed bottom sourced
Natural range
Central and eastern US; quiet to flowing pools of upper reaches, creeks and small rivers. inferred
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Insects, small invertebrates, algae and detritus sourced
Social behaviour
Schooling inferred
Territorial
No inferred
Activity
Diurnal inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
Yes inferred
levensduur_max_jaar
3.0 verified
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Spawning males with reddish fins and a steely blue sheen; often deposits eggs at sunfish nests. 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

Same genus Lythrurus

More from the family Cyprinidae

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