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Home > Marine Invertebrates > Sea Stars > Red Knob Sea Star
Red Knob Sea Star (Protoreaster linckii)
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Due to variations within species, your item may not look identical to the image provided.
 QUICK STATS
Care Level: Easy
Temperament: Peaceful
Reef Compatible: No
Water Conditions: 72-78° F, dKH 8-12, pH 8.1-8.4, sg 1.023-1.025
Max. Size: 1'
Color Form: Black, Red
Diet: Carnivore
Supplements: Trace Elements
Compatibility: View Chart
Origin: Africa, Indonesia, Maldives
Family: Oreasteridae

What do these Quick Stats mean? Click here

overview
The Red Knob Sea Star, also known as the Red Spine Star, African Sea Star, and Red-knobbed Starfish, 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 Knob Sea Star 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.

The Red Knob Sea Star is very intolerant of sudden changes in oxygen levels, salinity and pH of the water, and cannot tolerate copper-based medications. The drip acclimation method is highly recommended for all Sea Stars due to their intolerability to changes in water chemistry. It should never be exposed to air while handling.

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

Approximate Purchase Size: Small: 2" to 4" Medium: 4" to 6" Large: 6" to 8"


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SW - Red Knob Sea Star (Maldives) - Medium
  CN-78959,  $ 39.99
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  SW - Red Knob Sea Star (Africa) - Small
  CN-78119,  $ 44.99
 
    
  SW - Red Knob Sea Star (Africa) - Medium
  CN-78120,  $ 49.99
 
    
  SW - Red Knob Sea Star (Africa) - Large
  CN-78121,  $ 54.99
 
    
  SW - Red Knob Sea Star (Maldives) - Small
  CN-78122,  $ 34.99
 
    
  SW - Red Knob Sea Star (Maldives) - Large
  CN-78123,  $ 44.99
 
    
  SW - Red Knob Sea Star (Indonesia) - Small
  CN-78124,  $ 44.99
 
    
  SW - Red Knob Sea Star (Indonesia) - Medium
  CN-78125,  $ 49.99
 
    
  SW - Red Knob Sea Star (Indonesia) - Large
  CN-78126,  $ 54.99
 
    
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