Home · Serranidae · Day grouper
Day grouper (Epinephelus striatus) — Serranidae

Day grouper

Epinephelus striatus
Family: Serranidae
CR · Critically Endangered

The Day grouper (Epinephelus striatus) is a saltwater fish of the family Serranidae that grows up to 122 cm.

Length
122 cm
Water
Saltwater
Depth
1.0–90.0 m
Diet
Carnivore
Behaviour
Solitary
Activity
Diurnal
Body shape
Torpedo-shaped
Substrate
Stone or rock
Danger
Venomous / poisonous
Edibility
Highly prized

Description

The Nassau grouper is a large grouper (family Serranidae) of the western Atlantic and Caribbean. The species grows to about 122 cm and has a robust, pale body with dark bars and a saddle blotch on the caudal peduncle. It lives from the shoreline to at least 90 m depth, often near caves; juveniles are common in seagrass beds. Its diet consists mainly of fishes and crustaceans. The species is a protogynous hermaphrodite that forms huge, predictable spawning aggregations; those very aggregations led to severe overfishing, so it is now Critically Endangered (CR). In parts of its range the flesh can contain ciguatera.

Frequently asked questions

How do you recognise the Day grouper?

The Day grouper has a torpedo-shaped body, is mainly brown and shows a vertical stripes pattern.

Where does the Day grouper live?

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

How big does the Day grouper get?

The Day grouper grows to a maximum of about 122 cm.

Is the Day grouper dangerous to humans?

The Day grouper is venomous — handle spines with care and seek medical help after a sting if needed.

Is the Day grouper edible?

Yes, the Day grouper 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
Jacob Peper sourced
English name
Day grouper verified
Scientific name
Epinephelus striatus
Family
Serranidae
Other names
Day grouper; Grouper verified

Appearance

Size class
Extra large verified
Max length (cm)
122.0 verified
Body shape
Torpedo-shaped sourced
Dominant colour
Brown inferred
Pattern
Vertical bars inferred
Tail shape
Rounded inferred
Mouth position
Terminal inferred
Lips
Thick / fleshy inferred
Barbels
No sourced
Dorsal fins
One continuous inferred
Dorsal spines
Yes sourced

Habitat & distribution

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

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Solitary inferred
Territorial
Yes inferred
Activity
Diurnal inferred
Reproduction
Protogynous (female first) sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
29.0 verified

For anglers

Edibility
Highly prized sourced
Fishing method
Bodemvissen met natuurlijk aas rond riffen en grotten; ooit zeer gewild, nu sterk gereguleerd vanwege de bedreigde status. sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Venomous / poisonous sourced

Status & sources

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

Same genus Epinephelus

More from the family Serranidae

Download Fin's Fish Guide

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

Get the beta →