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Tryon's hypselodoris (Hypselodoris tryoni)

Photo of Tryon's hypselodoris (Hypselodoris tryoni)

Key facts

Scientific name
Hypselodoris tryoni
Common name
Tryon's hypselodoris
Category
Molluscs
Family
Chromodorididae
Genus
Hypselodoris
Size
5–10 cm
Depth
5–40 m
IUCN status
Least concern (LC)
Danger level
Harmless
Habitats
coral-reef
Behaviours
benthic, slow-mover
Ocean zones
Asian Pacific, Indian Ocean & Red Sea

Description

Hypselodoris tryoni reaches 10 cm. Large Indo-Pacific nudibranch (Chromodorididae) (formerly Risbecia tryoni) with cream-white mantle covered with distinctive large black spots and purple-blue edge, white gills, orange rhinophores. Remarkable behavior: pairs often move in trail-following file (one tactilely following another), characteristic of transitioned Risbecia/Hypselodoris. Lives from 5 to 40 m on coral reefs of central and western Indo-Pacific. Iconic macro photo subject in trail-following pair.

Photo of Tryon's hypselodoris

Photo of Tryon's hypselodoris (Hypselodoris tryoni)Photo of Tryon's hypselodoris (Hypselodoris tryoni)

Frequently asked questions

How big is the Tryon's hypselodoris?
Tryon's hypselodoris (Hypselodoris tryoni) reaches 5–10 cm in length.
At what depth can you find the Tryon's hypselodoris?
Tryon's hypselodoris is found between 5–40 m deep.
Is the Tryon's hypselodoris dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Tryon's hypselodoris?
IUCN status: Least concern (LC).
Where can you find the Tryon's hypselodoris?
Found in: Asian Pacific, Indian Ocean & Red Sea.

Other species in the genus Hypselodoris

  • Hypselodoris picta - Painted hypselodoris
  • Hypselodoris apolegma - Apolegma chromodoris
  • Hypselodoris emma - Emma's hypselodoris
  • Hypselodoris infucata - Painted hypselodoris
  • Hypselodoris maculosa - Spotted hypselodoris
  • Hypselodoris zephyra - Zephyr hypselodoris

Other species in the family Chromodorididae

  • Chromodoris magnifica - Magnificent chromodoris
  • Felimida purpurea - Purple doris
  • Felimida luteorosea - Rose-and-gold doris
  • Risbecia tryoni - Tryon's risbecia
  • Goniobranchus geometricus - Geometric goniobranchus
  • Goniobranchus reticulatus - Reticulated goniobranchus

Sources

  • Taxonomy: WoRMS (AphiaID 558646)
  • Photos: iNaturalist (CC BY-NC)
  • Distribution: GBIF (taxonKey 6126802)
  • Conservation: IUCN Red List
  • Encyclopedia: Wikipedia