Species Details

Details of Slender grouper will be displayed below

Slender grouper   

Common Name: Slender grouper
Scientific Name: Anyperodon leucogrammicus
Local Name: Boalhajehi faana
Dhivehi Name: ބޯޅަޖެހި ފާނަ
Animalia  (Kingdom)
Chordata  (Plylum)
Perciformes  (Order)
Serranidae  (Family)
Anyperodon   (Genus)

Slender grouper's description

The slender grouper is a medium fish growing to a length of about 65 centimetres. The head occupies 40% of the total length and the mouth is large, with the lower jaw longer than the upper jaw. There are no palatine Teeth, a fact which distinguishes this species from other groupers. The basic colour is pale reddish-brown liberally dotted with orange spots which are closer together on the head. There are five pale silvery blue longitudinal lines running down either side, the lower 3 reaching the tail but the upper two breaking into irregular streaks. The dorsal fin has 11 spines and 14 to 16 soft rays. The anal fin has 3 spines and 8 to 9 soft rays. Juvenile fish have vivid blue and red longitudinal stripes.

Slender grouper's facts

  • The slender grouper is carnivorous.
  • It is found on coral reefs and seaward reef slopes.
  • It can grow upto 65 cm.
  • It is a non-migratory species.

Slender grouper's Behavior & Ecology

Anyperodon leucogrammicus is a reef-associated, non-migratory species that inhabits coral rich areas (5 to 80 m) and clear waters on lagoon and seaward reefs. 

Slender grouper's Feeding

The main diet of the Slender Grouper is probably small fishes, small cephalopods and crustaceans.  They seem to be ambush predators who vary their diet according to location and availability and as with most groupers pretty much anything moving that can fit into their mouths they will have a go at. The slender grouper is carnivorous, feeding mainly on other fish such as goatfish but possibly also on invertebtrates. Juvenile slender groupers are aggressive mimics of the red-lined wrasse and the silty wrasse. They resemble them in appearance and in behaviour which lulls a potential prey fish into a false sense of security and enables the grouper to approach it without detection.

Slender grouper's Reproduction


Slender grouper's Conservation


Slender grouper's Relationship with Humans

It is used in commercial fisheries of the Maldives.

Slender grouper habitat

This species inhabits coral rich areas on sheltered lagoon and seaward reefs in clear waters. On the Great Barrier Reef, it appears to exclusively occur on the mid-reef slope (Newman et al. 1997). It mainly consumes fish and probably crustaceans. Juveniles mimic the wrasse Halichoeres purpurescens to approach their prey (Allen and Erdmann 2012). Its maximum length is 65 cm.

Slender grouper threats

Overfishing is a localised threat to this species in some parts of its range, especially in the Maldives where export to supply the live reef fish food trade has been increasing. Habitat loss due to the degradation of coral reefs caused by climate change may impact this species in the future.

Slender grouper's status