Common name: Longfin dottyback

General information

The Twinspot Dottyback, scientifically known as Manonichthys polynemus, is a captivating and somewhat elusive species in the marine aquarium trade. This fish is known for its striking coloration, with a deep purple to black body contrasted by two prominent white spots on the dorsal fin, which give it its common name. It is a member of the Pseudochromidae family, which is known for small, brightly colored species that are often territorial.

Care

Twinspot Dottybacks are moderately easy to care for but can be territorial, especially in smaller aquariums. They thrive in well-established tanks with plenty of rockwork and hiding spaces to mimic their natural reef environment. These fish are carnivorous and should be fed a varied diet of meaty foods such as mysis shrimp, brine shrimp, and finely chopped seafood.

Reproduction

In the aquarium, Twinspot Dottybacks can be bred if provided with the right conditions. They are hermaphroditic, with the ability to change sex, typically from female to male. Breeding pairs will lay eggs in a secure cave or crevice, and the male will guard and tend to the eggs until they hatch.

Habitat

Manonichthys polynemus is found in the Western Pacific, particularly around the Philippines and Indonesia. They prefer steep outer reef slopes and are typically found at depths ranging from 20 to 60 meters. In the wild, they are often associated with large barrel sponges, which provide shelter and a platform for feeding.