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Rock bass (Ambloplites rupestris) — Centrarchidae

Rock bass

Ambloplites rupestris
Family: Centrarchidae
LC · Least Concern

The Rock bass (Ambloplites rupestris) is a freshwater fish of the family Centrarchidae that grows up to 43 cm.

Length
43 cm
Water
Freshwater
Depth
0.0–21.0 m
Diet
Carnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Edibility
Commonly eaten

Description

The rock bass is a stocky sunfish of the family Centrarchidae reaching about 43 cm but usually smaller. The brownish-yellow body bears rows of dark spots and a large mouth; the red eyes are striking. The fish can change colour and pattern quickly to match its surroundings. The species is native to the fresh water of eastern and central North America and lives in clear lakes and flowing rivers with stony or vegetated bottoms. It hunts insects, crustaceans, crayfish and small fish. In late spring the male makes a nest pit on gravel and guards the eggs and young. For anglers it is a willing, sporting panfish.

Frequently asked questions

How do you recognise the Rock bass?

The Rock bass has a flattened, disc-shaped body, is mainly brown and shows a spots pattern.

Where does the Rock bass live?

The Rock bass lives in fresh water and is mostly found around stony or rocky ground.

How big does the Rock bass get?

The Rock bass grows to a maximum of about 43 cm. On average the species is around 15 cm.

Is the Rock bass dangerous to humans?

No, the Rock bass is harmless to humans.

Is the Rock bass edible?

Yes, the Rock bass is commonly eaten.

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All data

Identification

Dutch name
Rotsbaars inferred
English name
Rock bass verified
Scientific name
Ambloplites rupestris
Family
Centrarchidae
Other names
Northern rock bass; Redeye; Redeye bass; Rock bass verified

Appearance

Size class
Large verified
Max length (cm)
43.0 verified
Average length (cm)
15.4 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Brown sourced
Pattern
Spots sourced
Tail shape
Straight inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
Yes verified

Habitat & distribution

Water type
Freshwater verified
Substrate
Stone or rock verified
Min depth (m)
0.0 verified
Max depth (m)
21.0 verified
Origin
Native verified

Behaviour & biology

Diet
Carnivore verified
Social behaviour
Small groups verified
Territorial
Yes verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
levensduur_max_jaar
18.0 verified

For anglers

Edibility
Commonly eaten verified
Fishing method
Hengelen met worm, klein kunstaas of insect bij stenige oevers en beschoeiingen; een gewillige, sportieve panvis sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Ambloplites

More from the family Centrarchidae

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