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Red-knobbed Starfish
Veterinary & Aquatic Services Department, Drs. Foster & Smith
Starfish
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Protoreaster linckii

Red-knobbed Starfish

Quick Stats:   Red-knobbed Starfish

Family: Oreasteridae
Range: Indian Ocean
Size: Up to 12 inches
Diet: Carnivore
Tank Set-up: Marine: Gravel or sand, rock
Reef Compatible: No
Tank Conditions: 72-78ºF; sg 1.023-1.025; pH 8.1-8.4
Temperament: Peaceful
Venomous: No
Care Level: Easy


The Red-knobbed Starfish, also known as the Red Spine Star, African Sea Star, and African Red Knob Sea Star, has a thick, gray body with multiple bright red tubercles extending upward along each of its five arms. Red stripes connect these protrusions, giving its back the appearance of wires interconnecting in a grid-like fashion. It is found in shallow tidal pools and up to 100' deep reefs in the Indian Ocean.

The Red-knobbed Starfish requires a large aquarium with ample supplies of live rock. A small specimen will eat algae. As it grows older, however, it is not reef compatible, as it will eat soft corals, sponges, tubeworms, clams, starfish, and other invertebrates. It should not be housed with Puffers. It is very sensitive to high levels of copper-based medications and will not tolerate high levels of nitrates.

Breeding in an aquarium is extremely difficult with no distinguishing characteristics to help differentiate males from females.

In the aquarium, the diet can consist of chopped clams, shrimp, fish, and squid fed once a week.

 

Photo courtesy of T.F.H. Publications, publishers of the Burgess Atlas.

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