Common name: Whitespotted grouper

General information

The Blue-spotted Grouper, scientifically known as Epinephelus coeruleopunctatus, is a striking marine fish that is admired for its vibrant coloration and patterns. This species is characterized by its blue spots and blotches against a darker body, which can range from brown to greenish-grey. It is a member of the family Serranidae, which includes groupers and sea basses.

Groupers like the Blue-spotted Grouper are known for their robust build and large mouths, which they use to ambush prey. They are solitary and territorial fish, often found lurking around reefs waiting for an opportunity to feed.

Care

In the aquarium, Blue-spotted Groupers require a large tank due to their potential size and territorial nature. They are carnivorous and need a diet consisting of meaty foods such as fish, squid, and crustaceans. It is important to provide them with plenty of hiding places and a well-structured environment that mimics their natural reef habitat.

Aquarists should be cautious when introducing this species into a community tank, as they can be aggressive towards smaller fish and invertebrates that they may see as prey.

Reproduction

Like many groupers, Epinephelus coeruleopunctatus is a protogynous hermaphrodite, meaning they start life as females and can change to males as they mature. In the wild, they form spawning aggregations which are often targeted by fisheries, making some populations vulnerable.

Breeding them in captivity is challenging and not commonly done by hobbyists due to their complex life cycle and the large space required for adults.

Habitat

The Blue-spotted Grouper is found in the Indo-Pacific region, from the Red Sea and East Africa to the central Pacific. They inhabit coral and rocky reefs, often in lagoons or on outer reef slopes, typically at depths of 2 to 40 meters.

Their preference for reef environments makes them an interesting species for a fish-only or a large predator tank setup in the aquarium hobby.