Common starfish (Asterias rubens)

Common starfish
Loading more images and videos...

Common starfish fact file

Common starfish description

GenusAsterias (1)

The common starfish (Asterias rubens) has five arms (although individuals may occasionally have just four or as many as six) (2). The colour of the common starfish varies from red to yellowish-brown and more rarely violet (2). The upper surfaces of the arms feature a row of spines along the centre, and the underside has rows of 'tube-feet', which have suckers at the tips (2).

Diameter: 15 cm (2)

Common starfish biology

This predatory species takes a range of marine prey including other echinoderms (sea urchins, starfish and brittlestars), worms and molluscs as well as carrion (3). It often prizes bivalve shells apart, using the suckers on the tube-feet. Once a small gap has been opened, the common starfish inserts the lobes of its stomach inside the shell, and starts to digest the bivalve (2). This starfish has a good sense of smell, which helps it to locate its prey and avoid predators (3). Some of its prey species are able to smell the starfish as it approaches and avoid it (3).

The sexes are separate, breeding occurs in spring and summer and fertilisation occurs externally (2). The early larval stage of the common starfish (called a 'bipinnaria' larva) is planktonic, transforming into a 'brachiolaria' larva before undergoing full metamorphosis and settling around 87 days after fertilisation (3). The life-span of a common starfish is between 5 and 10 years (3). Large aggregations occasionally form, of around 100 individuals per square metre (3). It is not known what triggers these aggregations (3).


Common starfish range

The common starfish is common and widespread around the coasts of Britain and Ireland, and throughout the northeast Atlantic from Norway to Senegal (3).


Common starfish habitat

Found on a range of marine substrata including fine sand, rock and gravel (3). The common starfish can often be found amongst mussel beds and barnacles on British shores (2).


Common starfish status

The common starfish is widespread in Britain (3).


Common starfish threats

The common starfish is not currently threatened.


Common starfish conservation

Conservation action has not been targeted at the common starfish.


Find out more

For more on the common starfish, see:



This information is awaiting authentication by a species expert, and will be updated as soon as possible. If you are able to help please contact:



Stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
Of the stage in an animal’s lifecycle after it hatches from the egg. Larvae are typically very different in appearance to adults; they are able to feed and move around but usually are unable to reproduce.
An abrupt physical change from the larval to the adult form.
Aquatic organisms that drift with water movements; may be either phytoplankton (plants), or zooplankton (animals).


  1. National Biodiversity Network Species Dictionary (January, 2003)
  2. Fish, J.D. and Fish, S. (1996) A Student's Guide to the Seashore. Second Edition. Cambridge University Press, Cambridge.
  3. Budd, G., 2001. Asterias rubens. Common starfish. Marine Life Information Network: Biology and Sensitivity Key Information Sub-programme [on-line]. Plymouth: Marine Biological Association of the United Kingdom. (August, 2002)

Image credit

Common starfish  
Common starfish

© Wild Wonders of Europe / Lundgren /

Nature Picture Library
5a Great George Street
United Kingdom
Tel: +44 (0) 117 911 4675
Fax: +44 (0) 117 911 4699


Link to this photo

Arkive species - Common starfish (Asterias rubens) Embed this Arkive thumbnail link ("portlet") by copying and pasting the code below.

Terms of Use - The displayed portlet may be used as a link from your website to Arkive's online content for private, scientific, conservation or educational purposes only. It may NOT be used within Apps.

Read more about



MyARKive offers the scrapbook feature to signed-up members, allowing you to organize your favourite Arkive images and videos and share them with friends.

Play the Team WILD game:

Team WILD, an elite squadron of science superheroes, needs your help! Your mission: protect and conserve the planet’s species and habitats from destruction.

Conservation in Action

Which species are on the road to recovery? Find out now »

This species is featured in:

This is a UK sandy shore species. Visit our habitat page to learn more.

Help us share the wonders of the natural world. Donate today!


Back To Top