Common name: Galathea Sea Star

General information

The Galathea Sea Star, scientifically known as Nardoa galathea, is a striking marine invertebrate popular among reef aquarium enthusiasts. It is characterized by its vibrant coloration, typically a combination of red, orange, and yellow hues, and its distinctive granulated texture. This sea star is not only admired for its beauty but also for its role in the ecosystem as a detritivore, helping to maintain the cleanliness of the aquarium by consuming detritus and uneaten food.

Care

Nardoa galathea requires a well-established aquarium with a stable environment. They are sensitive to rapid changes in water parameters, so gradual acclimation is crucial. A sandy substrate and ample live rock provide necessary hiding places and surfaces for foraging. They should be fed a varied diet that includes meaty foods and marine-based detritus. Overfeeding should be avoided to prevent water quality issues.

Reproduction

In the aquarium, reproduction of Nardoa galathea is not commonly observed. However, in the wild, they reproduce both asexually, through fragmentation, and sexually, with external fertilization. Hobbyists interested in breeding should provide an environment that closely mimics natural conditions, although success rates can be low.

Habitat

Nardoa galathea is found in the Indo-Pacific region, from the Red Sea to the Great Barrier Reef and as far north as Japan. They inhabit various reef environments, often seen on reef slopes and lagoons at depths where light is sufficient for the benthic algae and detritus they feed on.