The Redline darter (Etheostoma rufilineatum) is a freshwater fish of the family Percidae that grows up to 8 cm.
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.
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All data
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Status & sources
Same genus Etheostoma
More from the family Percidae

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Point your camera at the fish and Fin names the species in seconds. Free, and the Redline darter is one of 12,519 species in the app.