WHATSTHATFISH
Corals & anemones

Leathery Sea Anemone

Radianthus crispa

Also known as: Elegant Armed Anemone, Hexacoral, Leathery Anemone, Long Tentacle Anemone, Purple Tip Anemone, Sebae Anemone

Adult
@fishx6 · Mirihi Island Resort, Maldives · May 20081 / 20
01

Overview

Found attached to branching corals or amongst dead coral, rubble, and sandy areas, of coral and rocky reefs, playing host to 15 types of anemonefish and their families.
They feed on fish fry, small invertebrates, and zooplankton, by catching in their sticky, stinging tentacles.

Sea Anemones are large solitary polyps which have no skeleton. They have a basal or pedal disc which helps them crawl and dig into place, for some, once in place it is virtually impossible to move. Other smaller anemones move around the reef to feed at night.
Most eat plankton, but they are capable of eating anything caught in their stinging tentacles including quite big fish.
The fringing tentacles are configured in six or multiples of six.
Some sea anemones have a symbiotic relationship with sea anemones and some live commensally with various crabs, shrimp and brittle stars.

02

How to identify

Body shape
tentacles

Tap any trait to see other fish that share it.

03

Habitat & where to find it

  • Range · Indo-Pacific
  • Country only · 20
LIVES IN

Found attached to branching corals or amongst dead coral, rubble, and sandy areas, of coral and rocky reefs, playing host to 15 types of anemonefish and their families.

04

Adult photos 20

06

Discussion

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    ALL STAGES
    FOR THE MARINE-BIOLOGY CURIOUS

    Deep dive

    Taxonomy

    1. kingdomAnimalia
    2. phylumCnidaria
    3. classHexacorallia
    4. orderActiniaria
    5. familyStichodactylidae
    6. genusRadianthus
    7. speciesRadianthus crispa (Hemprich & Ehrenberg in Ehrenberg, 1834)

    SourcesWoRMSWikipedia

    07

    More in the family

    Sea Anemones (Stichodactylidae)