Fin's Fish Guide
The Smallmouth bass (Micropterus dolomieu) is a freshwater fish of the family Centrarchidae that grows up to 69 cm.
Originally eastern and central North America, in clear, stony water of rivers and cool lakes.
Description
The smallmouth bass is a powerful, elongate bass of the family Centrarchidae (sunfishes) reaching about 69 cm. The brown-green body bears dark vertical bars and the eyes are often reddish; unlike the largemouth bass the mouth does not reach past the eye, from which the species takes its name. It is native to eastern and central North America and lives in clear, stony water of rivers and cool lakes. As a predator it hunts fish, crayfish, large insects and crustaceans. In late spring the male builds a nest pit and fiercely guards the eggs and young. As a popular sport fish it has been introduced into parts of Europe, where it becomes locally invasive and competes with native predators.
Frequently asked questions
How do you recognise the Smallmouth bass?
The Smallmouth bass has a torpedo-shaped body, is mainly green and shows a vertical stripes pattern. Powerful, elongated bass with a brown-green body, dark vertical bars and red eyes; the mouth does not reach beyond the eye (hence 'smallmouth').
Where does the Smallmouth bass live?
The Smallmouth bass lives in fresh water and is mostly found around stony or rocky ground. Originally eastern and central North America, in clear, stony water of rivers and cool lakes.
How big does the Smallmouth bass get?
The Smallmouth bass grows to a maximum of about 69 cm. On average the species is around 8 cm.
Is the Smallmouth bass dangerous to humans?
No, the Smallmouth bass is harmless to humans. None required: this species is harmless to humans.
Is the Smallmouth bass edible?
Yes, the Smallmouth bass is a highly prized food fish.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Micropterus
More from the family Centrarchidae
Want the complete picture on the Smallmouth bass?
Point your camera at the fish and Fin names the species in seconds. Free, and the Smallmouth bass is one of 12,519 species in the app.