Mycteroperca tigris  (Valenciennes, 1833)

Tiger grouper
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Mycteroperca tigris   AquaMaps   Data sources: GBIF OBIS
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Image of Mycteroperca tigris (Tiger grouper)
Mycteroperca tigris
Picture by Stadler, B.

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

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Serranidae (Sea basses: groupers and fairy basslets) > Epinephelinae
Etymology: Mycteroperca: Greek, mykter, -eros = nose + Greek, perke = perch (Ref. 45335).

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 10 - 40 m (Ref. 5222).   Subtropical; 33°N - 27°S, 98°W - 33°W (Ref. 5222)

Length at first maturity / Size / Weight / Age

Maturity: Lm 46.0, range 34 - ? cm
Max length : 101 cm TL male/unsexed; (Ref. 26340); common length : 40.0 cm TL male/unsexed; (Ref. 5217); max. published weight: 10.0 kg (Ref. 5222)

Short description Morphology | Morphometrics

Dorsal spines (total): 11; Dorsal soft rays (total): 15-17; Anal spines: 3; Anal soft rays: 11. Distinguished by the following characteristics: Back crossed by about 11 pale narrow lines that slope downward and forward. No other grouper in the Caribbean has the same pattern of narrow pale diagonal lines (Ref. 26938). Further characterized by having depth of body contained 3.1-3.6 times in SL; head length 2.5-2.8 times in SL; flat interorbital area; rounded preopercle, without lobe at angle; diameter of posterior nostrils 3-5 times larger than anterior ones; large teeth, well developed canines (Ref. 89707).

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

Western Atlantic: southern Florida (USA) and the Gulf of Mexico to Brazil. It was suggested that Mycteroperca tigris was a transient species in the northwestern Gulf of Mexico, but has recently become abundant on the Flower Garden Banks off Texas (Ref. 6887).

Biology     Glossary (e.g. epibenthic)

A solitary species (Ref. 26340) occurring in coral reefs and rocky areas. It is considered an ambush predator that hides among the coral and sponges and is easy to approach. Frequents cleaning stations (Ref. 9710). The size versus sex distribution of Bermuda population indicates that this species is a protogynous hermaphrodite; all fish less than 37 cm TL were females and all fish larger than 45 cm TL were males (Ref. 6886). Randall (Ref. 33) reported food of 59 specimens 15 to 57 cm SL were purely fishes of a variety of species.

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)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Reports of ciguatera poisoning (Ref. 30911)




Human uses

Fisheries: commercial; aquarium: public aquariums
FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01445 (0.00826 - 0.02530), b=3.07 (2.92 - 3.22), based on LWR estimates for species & Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  4.5   ±0.8 se; Based on diet studies.
Resilience (Ref. 69278):  Low, minimum population doubling time 4.5 - 14 years (K=0.11; tm=6.5-9.5).
Vulnerability (Ref. 59153):  High vulnerability (64 of 100) .
Price category (Ref. 80766):   High.