Protoreaster lincki explained

Protoreaster lincki, the red knob sea star, red spine star, African sea star,[1] or the African red knob sea star,[2] is a species of starfish from the Indian Ocean.[3] [4]

Description

P. lincki grows to a maximum diameter of 12inches. It has numerous tubercles located along its five arms. These tubercles are bright red and extend upward from the arms. It has a gray body with red stripes that connect the tubercles. This creates an appearance of a grid made of interconnecting wires.[5]

The skeleton is composed of many calcareous ossicles and spicules. They are located inside the layer of connective tissue. This skeleton supports the large central disk.[6]

Distribution

It is distributed in the western Indian Ocean[7] [8]

The red-knobbed starfish can only be found in the Indian Ocean, mostly along the African coast and Madagascar, north to India and Sri Lanka. A small population is also present in Coral Bay, Western Australia.[9]

They prefer sandy or muddy seabeds because it is easier for them to search and forage for food. While they are most often seen in shallow tidal pools, they can live in a variety of depths, down to 100m (300feet) deep.[10] Red-knobbed starfish are carnivorous animals that eat a number of sea creatures.

Behaviour and diet

P. lincki is active in both daytime and nightime.[11] It is a popular aquarium specimen, but is considered incompatible with many other invertebrates, as it will eat soft corals, sponges, tube worms, clams, other starfish, and the like.[12]

It is also a heavily fished species for the curios trade, which contributes to the rarefaction of the species.[9]

Bibliography

External links

Notes and References

  1. Web site: FishDB - Red Knob Sea Star. www.fishdb.com. 2016-04-10. https://web.archive.org/web/20120320152650/http://www.fishdb.com/db/salt/specimen/Red_Knob_Sea_Star.php. 2012-03-20. dead.
  2. Web site: Ask a Vet Online 24/7 - PetCoach.
  3. Web site: View Protoreaster lincki. www.saltcorner.com. 2016-04-10.
  4. Web site: BioLib: Biological library. Zicha. Ondrej. www.biolib.cz. 2016-04-10.
  5. Web site: Ask a Vet Online 24/7 - PetCoach.
  6. Book: Biological Adhesive Systems: From Nature to Technical and Medical Application. Byern. Janek von. Grunwald. Ingo. 2011-01-27. Springer Science & Business Media. 9783709102862. en.
  7. Book: Indiviglio, Frank. The Everything Aquarium Book: All You Need to Build the Aquarium of Your Dreams. 2006-10-12. Everything Books. 1440523894. en.
  8. Web site: FreshMarine.com - African Red-Knob Sea Star - Protoreaster lincki - Buy Cheap Red Knob at Wholesale. www.freshmarine.com. 2016-04-10.
  9. Ducarme . Frédéric . 2022 . How to assess the absence of a species? A revision of the geographical range of the horned sea star, Protoreaster nodosus (Echinodermata; Asteroidea) . Frontiers of Biogeography . 14 . 3 . 10.21425/F5FBG56187 . free .
  10. Web site: Ask a Vet Online 24/7 - PetCoach.
  11. Web site: FishDB - Red Knob Sea Star. www.fishdb.com. 2016-04-10. https://web.archive.org/web/20120320152650/http://www.fishdb.com/db/salt/specimen/Red_Knob_Sea_Star.php. 2012-03-20. dead.
  12. Web site: Red Knob Sea Star – Protoreaster linckii Aquariums Life . www.aquariumslife.com . dead . https://web.archive.org/web/20101202021412/http://www.aquariumslife.com/sea-star/red-knob-sea-star-protoreaster-linckii/ . 2010-12-02.

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