Home · Sparidae · Knobbed porgy
Knobbed porgy (Calamus nodosus) — Sparidae

Knobbed porgy

Calamus nodosus
Family: Sparidae
LC · Least Concern

The Knobbed porgy (Calamus nodosus) is a saltwater fish of the family Sparidae that grows up to 54 cm.

Length
54.4 cm
Water
Saltwater
Depth
7.0–90.0 m
Diet
Carnivore
Behaviour
Small groups
Activity
Diurnal
Body shape
Flat / disc-shaped
Substrate
Stone or rock
Danger
Harmless
Edibility
Highly prized

Description

The knobbed porgy is a sea bream from the western Atlantic, ranging from North Carolina to southern Florida and the entire Gulf of Mexico. It grows to about 54 cm and can live seventeen years. It has a deep, laterally compressed, silvery body with a conspicuous knob on the snout, from which it takes its name. The fish lives over hard bottoms and reefs between about 7 and 90 metres depth and feeds on hard-shelled invertebrates such as molluscs, crabs and echinoderms. It is a valued game and food fish. The IUCN assesses the species as Least Concern (LC).

Frequently asked questions

How do you recognise the Knobbed porgy?

The Knobbed porgy has a flattened, disc-shaped body, is mainly silver-grey and shows a plain pattern.

Where does the Knobbed porgy live?

The Knobbed porgy lives in the sea (marine waters) and is mostly found around stony or rocky ground.

How big does the Knobbed porgy get?

The Knobbed porgy grows to a maximum of about 54 cm. On average the species is around 35 cm.

Is the Knobbed porgy dangerous to humans?

No, the Knobbed porgy is harmless to humans.

Is the Knobbed porgy edible?

Yes, the Knobbed porgy is a highly prized food fish.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Knobbelzeebrasem verified
English name
Knobbed porgy verified
Scientific name
Calamus nodosus
Family
Sparidae
Other names
Knobbed porgy verified

Appearance

Size class
Large verified
Max length (cm)
54.4 verified
Average length (cm)
35.0 verified
Body shape
Flat / disc-shaped sourced
Dominant colour
Silver / grey inferred
Pattern
Plain inferred
Tail shape
Forked inferred
Mouth position
Terminal sourced
Lips
Thick / fleshy sourced
Barbels
No sourced
Dorsal fins
One continuous sourced
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Stone or rock sourced
Min depth (m)
7.0 verified
Max depth (m)
90.0 verified
Origin
Native verified

Behaviour & biology

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

For anglers

Edibility
Highly prized sourced
Fishing method
Bodemvissen met schelpdier of krab als aas; ook met de handlijn. sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

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

Same genus Calamus

More from the family Sparidae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →