Common name: Red Knob Sea Star
General information
The Red Knob Sea Star, Neoferdina insolita, is a striking marine invertebrate known for its vibrant red coloration and prominent spines. It is a member of the family Goniasteridae, which includes sea stars with generally attractive appearances and interesting behaviors. This species is often sought after by reef aquarium enthusiasts for its beauty and the dynamic presence it can add to a tank.
Details
- Recommended minimum tank volume
- 75 liter (20 gallons)
- Salinity
- S.G. 1.023 to 1.025
- Temperature
- 24 to 27 °C (75 to 81 °F)
- Acidity
- pH 8.1 to 8.4
- Average size
- 10 cm (4″)
- Care level
- Moderate to easy Sensitive to water quality
- Diet
- Omnivore Enjoys varied diet, including detritus
- Reefsafe
- Yes
- Aggression
- Peaceful
- Captive bred
- No
Taxonomy
- KingdomAnimalsAnimalia
- PhylumEchinodermsEchinodermata
- ClassStarfishAsteroidea
- OrderStarfishValvatida
- FamilySea StarsGoniasteridae
- GenusSea StarsNeoferdina
- SpeciesRed Knob Sea StarNeoferdina insolita Livingstone, 1936
Care
Caring for Neoferdina insolita requires a well-established aquarium with a stable environment. They need a sandy substrate and plenty of live rock to scavenge for microorganisms and detritus. It's important to note that they may prey on small invertebrates and can potentially harm small sessile animals, so they should be monitored in a reef tank setting. They are sensitive to sudden changes in water parameters, so maintaining consistent water quality is crucial.
Reproduction
In the wild, Neoferdina insolita reproduces by releasing gametes into the water column, a process known as broadcast spawning. In the aquarium, however, reproduction is rare. If conditions are optimal and a group of these sea stars is kept, spawning may occur, but raising the larvae to adulthood is challenging and seldom achieved by hobbyists.
Symbiosis
While Neoferdina insolita does not have any specific symbiotic relationships that are of particular interest to reefkeepers, its role in the aquarium as a scavenger helps maintain a clean environment by consuming detritus and uneaten food.
Habitat
Neoferdina insolita is found in the Indo-Pacific region, particularly around the East African coast and the Red Sea. They inhabit various reef environments, often seen on or near coral rubble and sandy substrates.