Epinephelus striatus, Nassau grouper : fisheries, gamefish, aquarium

Epinephelus striatus (Bloch 1792)

Nassau grouper
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Epinephelus striatus
Picture by Randall, J.E.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopteri (ray-finned fishes) > Perciformes/Serranoidei () > Serranidae (Sea basses: groupers and fairy basslets) > Epinephelinae
Etymology: Epinephelus: Greek, epinephelos = cloudy (Ref. 45335).  More on author: Bloch.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; oceanodromous (Ref. 51243); depth range 1 - 90 m (Ref. 5217).   Tropical; 35°N - 34°S, 92°W - 34°W (Ref. 5222)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: Bermuda, Florida, Bahamas, Yucatan Peninsula and throughout the Caribbean to southern Brazil. Not known from the Gulf of Mexico except at the Campeche Bank off the coast of Yucatan, at Tortugas and off Key West.

Length at first maturity / Size / Weight / Age

Maturity: Lm 48.0  range ? - ? cm
Max length : 122 cm TL male/unsexed; (Ref. 5227); max. published weight: 25.0 kg (Ref. 5222); max. reported age: 29 years (Ref. 45400)

Short description Morphology | Morphometrics

Dorsal spines (total): 11 - 12; Dorsal soft rays (total): 16-18; Anal spines: 3; Anal soft rays: 8. Caudal fin rounded in juveniles. Dorsal fin notched between forward spines; 3rd or 4th spine the longest. Bases of soft dorsal and anal fins covered with scales and thick skin; scales small and greatly overlapping. Ground color tawny in individuals in shallow water, shading to pinkish or red in those from deeper water, sometimes with an orange cast. Can change color pattern in a few minutes from almost white to uniformly dark brown depending on mood. Third and fourth vertical bars branch above lateral line forming a W-shaped mark. Several distinct black spots below and behind eye and a characteristic `tuning-fork shaped stripe on top of head, dividing just behind the orbits. (see also Refs. 5221, 5222, 5227 and 2458).

Biology     Glossary (e.g. epibenthic)

Occurs from the shoreline to at least 90 m depth. Usually close to caves (Ref. 9710). Juveniles are common in seagrass beds. Diet comprises mainly of fishes (54%) and crabs (23%) and lesser amounts of other crustaceans and mollusks. It is solitary and mainly diurnal; but may sometimes form schools. Spawns near the new moon with up to 30,000 aggregating at certain spawning sites (Ref. 9710). The least wary and most friendly of all the groupers (Ref. 5226). Heavily fished and vulnerable to overfishing, particularly when migrating or aggregating to spawn (Ref. 9710). The most important commercial grouper in the West Indies. Marketed fresh, mostly between 2 to 10 kg (Ref. 3708).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Most males and females display a bicolored pattern during spawning. Courtship behavior involves vertical spiral movement, short vertical runs followed by rapid aggregation then rapid dispersal and horizontal runs near the bottom. Sex reversal reportedly between 30 and 80 cm SL. Some primary males found recently (Ref. 5222). Pelagic spawner (Ref. 31572).

Main reference Upload your references | References | Coordinator : Heemstra, Phillip C. | Collaborators

Heemstra, P.C. and J.E. Randall, 1993. FAO Species Catalogue. Vol. 16. Groupers of the world (family Serranidae, subfamily Epinephelinae). An annotated and illustrated catalogue of the grouper, rockcod, hind, coral grouper and lyretail species known to date. Rome: FAO. FAO Fish. Synop. 125(16):382 p. (Ref. 5222)

IUCN Red List Status (Ref. 123251)

  Critically Endangered (CR) (A4bd); Date assessed: 18 November 2016

CITES (Ref. 123416)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Reports of ciguatera poisoning (Ref. 30303)

Human uses

Fisheries: commercial; gamefish: yes; aquarium: public aquariums
FAO(fisheries: production; publication : search) | FishSource | Sea Around Us

More information

Common names
Spawning aggregation
Egg development
Larval dynamics
Aquaculture profile
Allele frequencies
Mass conversion
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Estimates based on models

Preferred temperature (Ref. 115969): 22.8 - 28, mean 26.4 °C (based on 400 cells).
Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01148 (0.01022 - 0.01290), b=3.05 (3.03 - 3.07), in cm total length, based on LWR estimates for this species (Ref. 93245).
Trophic level (Ref. 69278):  4.1   ±0.0 se; based on diet studies.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (Musick et al. 2000 (Ref. 36717)).
Prior r = 0.43, 95% CL = 0.28 - 0.64, Based on 1 stock assessment.
Vulnerability (Ref. 59153):  High vulnerability (63 of 100) .
Price category (Ref. 80766):   High.