Fin's Fish Guide
The Day grouper (Epinephelus striatus) is a saltwater fish of the family Serranidae that grows up to 122 cm.
Western Atlantic and Caribbean, from the shoreline to at least 90 m depth, often near caves; juveniles on seagrass beds.
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. Forms large, predictable spawning aggregations that led to severe overfishing; critically endangered (CR); protogynous hermaphrodite. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas.
Where does the Day grouper live?
The Day grouper lives in the sea (marine waters) and is mostly found around stony or rocky ground. Western Atlantic and Caribbean, from the shoreline to at least 90 m depth, often near caves; juveniles on seagrass beds.
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. The flesh can contain ciguatera in some tropical areas; do not eat large reef specimens from risk areas. In case of poisoning (tingling, gastrointestinal symptoms) seek medical advice.
Is the Day grouper edible?
Yes, the Day grouper 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 Epinephelus
More from the family Serranidae
Want the complete picture on the Day grouper?
Point your camera at the fish and Fin names the species in seconds. Free, and the Day grouper is one of 12,519 species in the app.
Or scan with your phone