also known as the Crimson Squirrelfish or Bigscale Squirrelfish, is a species of marine fish belonging to the family Holocentridae. This fish is native to the Indo-Pacific region and can be found in the shallow reefs and lagoons, usually at depths ranging from 3 to 80 meters.

The Samurai Squirrelfish has a distinctive body shape with a deep and compressed body, and a large head with a long snout. It has large eyes and a broad mouth with sharp teeth, which it uses to prey on small fishes and crustaceans. The fish can grow up to 40 cm in length, with males being slightly larger than females.

The body of the Samurai Squirrelfish is primarily a bright red color with a white belly, and it has a noticeable black blotch on its dorsal fin. It has a unique color pattern with scales that reflect the light in a way that makes it look like it is covered in glitter. This feature has earned it the nickname "Glitterfish" among divers and aquarium enthusiasts.

Samurai Squirrelfish are primarily nocturnal and are known to form small schools during the day, often hiding in crevices and under ledges to avoid predators. At night, they become more active and venture out to hunt for prey. They are not known to be aggressive towards humans, but they should be approached with caution as they have spiny fins that can cause injury if handled improperly.

These fish are popular in the aquarium trade due to their unique coloration and active behavior. They require a large tank with plenty of hiding places and should be fed a varied diet consisting of live and frozen foods.

In summary, the Samurai Squirrelfish is a stunningly beautiful and unique fish species that can be found in the coral reefs of the Indo-Pacific region. With its bright red coloration and glittering scales, it is a popular choice among aquarium enthusiasts. However, caution should be taken when handling these fish due to their spiny fins, and they should be provided with a suitable environment and diet in captivity.