Starfish – Multicolored Knob

Multicolored Knob Starfish Care Tips:

Minimum Tank Size:  30 Gallons

Max Size: Up to 15cm (6″)

Diet: Omnivore (Known to eat sessile and mollusc invertebrates)

Temperament: Semi-Aggressive

Lifespan: Up to 10 years

Scientific Name: Pentaceraster Mammillatus

Coral Safe: No

Invertebrate Safe: Yes with caution (Will eat sessile inverts and molluscs)

The Multicolored knob starfish is a rare predator that is barely seen in the aquarium trade. Their scientific name is Pentaceraster Mammillatus but they go by their common name, the multicolored knobbed starfish. This starfish is a part of the Pentaceraster family. They can grow up to 6” from one tip to the other and they can live up to 10 years. Multicolored knobbed starfish are omnivores, they are known to eat coral, sessile invertebrates such as clams, or anemones. These starfish should be directly fed every 2-3 days for optimal health. Feedings can be any type of meaty food and should be placed underneath the starfish. These starfish have a minimum tank size of 20 gallons. Due to their wide diet, they are considered semi-aggressive. Except for sessile invertebrates they are invertebrate safe, but they are not coral safe. Multicolored knobbed starfish are nocturnal and will most often stay on the rocks or the glass. Starfish are regenerative and will grow back an arm if it is lost.