Common name: Gag

Scientific name: Mycteroperca tigris (Valenciennes, 1833)
Caribbean coral garden
tiger groupercoral reef with fish: tiger grouper

General information

The Tiger Grouper, Mycteroperca tigris, is a striking species known for its distinctive coloration and patterns. This species is characterized by its robust body, large mouth, and the beautiful, tiger-like stripes that give it its common name. Tiger Groupers are predatory fish, feeding on a variety of smaller fish and invertebrates.

In the wild, they are often solitary and can be quite territorial. Their impressive appearance and behavior make them a fascinating addition to larger marine aquariums, although their size and predatory nature must be taken into account when considering tank mates.

Details

Recommended minimum tank volume
750 liter (200 gallons)
Salinity
S.G. 1.020 to 1.026
Temperature
22 to 28 °C (72 to 82 °F)
Acidity
pH 7.8 to 8.4
Average size
91 cm (3′)
Care level
Moderate to easy Needs large tank and hiding spots
Diet
Carnivore Prefers live fish and squid
Social
Solo Territorial, best kept alone
Reefsafe
No May eat smaller fish and inverts
Aggression
Semi aggresive Can be aggressive, especially when mature
Captive bred
No
Conservation statusSource: IUCN Red List
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Ray-finned Fishes
    Actinopterygii
  4. Order
    Perch-like Fishes
    Perciformes
  5. Family
    Groupers
    Serranidae
  6. Genus
    Grouper
    Mycteroperca
  7. Species
    Gag
    Mycteroperca tigris (Valenciennes, 1833)
  8. Synonyms
    Mycteroperca hopkinsi Jordan & Rutter, 1897
    Serranus camelopardalis Poey, 1860
    Serranus camelopardis Poey, 1860
    Serranus felinus Poey, 1860
    Serranus repandus Poey, 1860
    Serranus rivulatus Poey, 1860
    Serranus tigris Valenciennes, 1833
    Trisotropis reticulatus Gill, 1865

Care

Tiger Groupers require a spacious aquarium due to their potential size, which can reach up to 30 inches in the wild. They need ample hiding places and room to swim. A varied diet of meaty foods such as fish, squid, and crustaceans is essential for their health. Due to their predatory instincts, they should not be housed with small fish or invertebrates that could be seen as prey.

Reproduction

In their natural habitat, Tiger Groupers are known to form spawning aggregations, which are critical for their reproduction. In the aquarium, breeding Tiger Groupers is quite challenging and rarely achieved by hobbyists. They are protogynous hermaphrodites, starting life as females and potentially changing to males as they mature.

Habitat

Tiger Groupers are found in the Western Atlantic, from North Carolina to Brazil, including the Gulf of Mexico and the Caribbean Sea. They inhabit reef environments, often preferring ledges and caves at depths ranging from shallow waters to about 160 feet. Their natural habitat's complexity should be mimicked in the home aquarium to provide a sense of security and to encourage natural behaviors.