There are over 2,000 different species of brittle stars worldwide. The arms are highly flexible. A TOP QUALITY, LARGE Ophiuroides sp., a Brittle Star. The arms are clearly delineated from the central body disk, and in this way brittle stars can be distinguished from starfish (starfish arms blend with the central body disk such that it is not easy to delineate where the … Ophioderma brevispinum: short-spine brittle star – Caribbean, up to 12 inches (30 cm) in diameter. Echinoderms do not follow this pattern. The arms of the Brittle Star are separate appendages attached to the small, disk-like body.

Characteristics: The common brittle has a hairy appearance, due to all the fine spines, seven on each arm segment. Brittle stars have five arms that join together at a central body disk. However, brittle stars have thinner, more fragile arms than true starfish do. The bottom of the arms is covered with sucking tube feet. English: Savigny's brittle star. It usually has six arms, but since it is fissiparous some individuals that have not completed regeneration may have as few as two arms. In addition, brittle stars are more agile than starfish. This radial symmetry is not as apparent in sea urchins or sea cucumbers, but when these animals are closely examined or dissected, it becomes readily apparent that their body is arranged based on this 5-part symmetry. Brittle stars have a star shaped body. Brittle stars, an invertebrate species closely related to the sea star, have varied reproductive strategies. Brittle and basket stars are sea animals that have long, thin, flexible arms. Characteristics; Locomotion; Body Systems; Habitat; Fun Facts; References; Day @ the Zoo::Human Impact:: Brittle Stars are not used to humans for food or any other resources except for enjoyment in a marine fish tank. ... Includes: Sea Stars, Sea Lilies, Sea Urchins, Sea Cucumbers, and Brittle Stars.

An ophiuroid can easily cast off portions of an arm if attacked by a predator. The arms of brittle stars are easily broken. Characterized by radial symmetry with a central body from which five snakelike arms protrude.

These are the real deal! This ability to autotomize is the source of the common name brittle star. Compared to starfish, brittle stars have a much smaller central disc and no anus. Ophiuroidea (brittle stars and basket stars), the largest echinoderms; about 1,500 species.

Matrix size is 9-1/2" x 6". In addition, brittle stars are more agile than starfish.

There is no replication of internal organs, just one set in the central disk. Amphipholis kochii and Amphioplus abditus) and bioluminescence (the dwarf brittle star, Amphipholis squamata).

How Long I Live Up to five years.

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