Fin's Fish Guide
The Northern studfish (Fundulus catenatus) is a freshwater fish of the family Fundulidae that grows up to 20 cm.
Central and southeastern US; clear streams and rivers, often near springs.
Description
The northern studfish is an egg-laying toothcarp of the family Fundulidae from the central and south-eastern United States. The species grows to about 20 cm; breeding males are handsomely coloured with blue-green flanks and red spots. It inhabits the margins, pools and backwaters of clear creeks and small to medium rivers with a sandy or rocky bottom, often near springs. As an omnivore it feeds on insects, small crustaceans, snails and plant matter. Studfishes live just below the surface and lay their eggs in the gravel. The species is harmless to humans.
Frequently asked questions
How do you recognise the Northern studfish?
The Northern studfish has an elongate, eel-like body, is mainly blue and shows a plain pattern. Spawning males with blue-green flanks and red spots; small surface fish of clear streams.
Where does the Northern studfish live?
The Northern studfish lives in fresh water and is mostly found around mixed bottom. Central and southeastern US; clear streams and rivers, often near springs.
How big does the Northern studfish get?
The Northern studfish grows to a maximum of about 20 cm. On average the species is around 17 cm.
Is the Northern studfish dangerous to humans?
No, the Northern studfish is harmless to humans. None required: this species is harmless to humans.
Is the Northern studfish edible?
The Northern studfish is not usually eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Fundulus
More from the family Fundulidae
Want the complete picture on the Northern studfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Northern studfish is one of 12,519 species in the app.