(Pseudanthias fasciatus) is a tropical marine fish species belonging to the Serranidae family. It is native to the Indo-Pacific region and is commonly found in the Red Sea, the Gulf of Aden, and the western Indian Ocean.

Redstripe Anthias can grow up to 15 centimeters in length, with females generally being slightly smaller than males. They have a slender body shape with a pointed snout and forked tail. Their dorsal fin is relatively large and continuous, running the length of the body. Their coloration is predominantly pink with a bright red stripe running from the top of their head to the base of their tail, as well as a yellow stripe above the red stripe. The males tend to have brighter coloration than females, especially during the breeding season.

Redstripe Anthias are a peaceful species and are often found in large groups, both in the wild and in aquariums. They are usually found in coral reefs, often swimming around coral heads or overhangs. In the wild, they feed on zooplankton and small crustaceans, while in captivity, they can be fed a variety of frozen or live foods.

These fish are popular among hobbyists due to their vibrant colors and peaceful nature, but they require specific care and tank conditions. They are best kept in a large aquarium with plenty of swimming space and hiding places, as well as a high-quality filtration system. They prefer water with a temperature between 23-27 degrees Celsius and a pH of 8.1-8.4. In aquariums, they can be fed a varied diet of frozen or live foods, including brine shrimp, mysis shrimp, and krill.

In the wild, Redstripe Anthias form large, mixed-sex schools during breeding season, where the males display their bright colors and engage in courtship behavior. Females will release their eggs into the water column, where they are fertilized by the males. In aquariums, it can be challenging to recreate these conditions, but with careful management and the right environment, it is possible to breed Redstripe Anthias in captivity.

Overall, the Redstripe Anthias is a stunning and peaceful species that can make a great addition to a well-maintained aquarium with the right conditions. They are easy to care for and can be rewarding to keep and observe.