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Redline darter (Etheostoma rufilineatum) — Percidae

Redline darter

Etheostoma rufilineatum
Family: Percidae
LC · Least Concern

The Redline darter (Etheostoma rufilineatum) is a freshwater fish of the family Percidae that grows up to 8 cm.

Length
8.4 cm
Water
Freshwater
Diet
Carnivore
Behaviour
Small groups
Body shape
Elongated (eel-like)
Substrate
Mixed bottom
Danger
Harmless
Range
Fast-flowing rocky streams and rivers of eastern North America.
Edibility
Not eaten

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Description

The redline darter (Etheostoma rufilineatum) is a small, brightly coloured perch of the family Percidae from eastern North America. The species has an elongate body with a pattern of red-brown lines and spots, especially vivid in breeding males, and reaches only about 8 cm. It inhabits clear, fast-flowing rocky riffles of creeks and small to medium rivers. As a bottom dweller it feeds on the larvae of midges, blackflies, mayflies and caddisflies and on water mites. The eggs are buried in the substrate. Owing to its sensitivity to pollution the species is an indicator of clean water.

Frequently asked questions

How do you recognise the Redline darter?

The Redline darter has an elongate, eel-like body, is mainly multicoloured and shows a spots pattern. Brightly coloured males with red-brown lines; bottom-dweller of rapids, an indicator of clean water.

Where does the Redline darter live?

The Redline darter lives in fresh water and is mostly found around mixed bottom. Fast-flowing rocky streams and rivers of eastern North America.

How big does the Redline darter get?

The Redline darter grows to a maximum of about 8 cm. On average the species is around 7 cm.

Is the Redline darter dangerous to humans?

No, the Redline darter 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 Redline darter edible?

The Redline darter is not usually eaten.

More photos

Redline darter (Etheostoma rufilineatum) — Percidae — 2
iNaturalist ((c) ryantexsonier93, some rights reserved (CC BY-NC))
Redline darter (Etheostoma rufilineatum) — Percidae — 3
iNaturalist ((c) IHUNTA, some rights reserved (CC BY-NC))
Redline darter (Etheostoma rufilineatum) — Percidae — 4
iNaturalist ((c) Robert Lamb, some rights reserved (CC BY-NC))
Redline darter (Etheostoma rufilineatum) — Percidae — 5
iNaturalist ((c) River Watson, some rights reserved (CC BY-NC))
Fin

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All data

Identification

English name
Redline darter verified
Scientific name
Etheostoma rufilineatum
Family
Percidae

Appearance

Size class
Small verified
Max length (cm)
8.4 verified
Average length (cm)
6.9 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Multicoloured inferred
Pattern
Spots inferred
Tail shape
Straight inferred
Mouth position
Inferior (downward) inferred
Lips
Thin inferred
Barbels
No sourced
Dorsal fins
Two separate inferred
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Freshwater sourced
Substrate
Mixed bottom sourced
Natural range
Fast-flowing rocky streams and rivers of eastern North America. inferred
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Diet (detail)
Larvae of midges, mayflies and caddisflies and water mites sourced
Social behaviour
Small groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
Seasonality
Present year-round in its habitat; no pronounced seasonality known. inferred
Special features
Brightly coloured males with red-brown lines; bottom-dweller of rapids, an indicator of clean water. 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
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 Etheostoma

More from the family Percidae

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