Chromodoris lochi

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Loch's chromodoris
Chromodoris lochi (AA1).jpg
In the Philippines
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Nudipleura
clade Nudibranchia
Superfamily: Doridoidea
Family: Chromodorididae
Genus: Chromodoris
Species: C. lochi
Binomial name
Chromodoris lochi
Rudman, 1982[1]

Chromodoris lochi, common name Loch's chromodoris, is a species of colorful sea slug, a dorid nudibranch, a marine gastropod mollusk in the family Chromodorididae.


This species is found in the tropical waters of the central Indo-Pacific region and is known to range from Malaysia, Indonesia, Philippines to the Fiji and the northern coast of Australia.[2]


Chromodoris lochi is blue or blueish-white with a white margin and typically dark or black lines running down the mantle and the foot. On the mantle, a continuous line runs around the border passing on the outside of the rhinophore and a second median one can be discontinuous.

Individuals can reach at least 4 cm in length.[3]

There is some variation between individuals in this species, and the gills (retractile) and rhinophores (contractile) range in color from a translucent straw-color, through to pink and light orange.

This species is very similar in appearance to Chromodoris willani, Chromodoris boucheti and Chromodoris dianae and can be difficult to tell apart. Its most distinguishing feature is the uniform coloring of the mantle and the lack of white specks which are present in some of the other species.


Chromodoris lochi, like many other nudibranchs, feeds on sponges. It has been reported to eat Cacospongia mycofijiensis and Semitaspongia, both in the family Thorectidae.[4]


  1. ^ Rudman W. B. (1982) "The Chromodorididae (Opisthobranchia: Mollusca) of the Indo-West Pacific: Chromodoris quadricolor, C. lineolata and Hypselodoris nigrolineata colour groups". Zoological Journal of the Linnean Society 76(3): 183-241. doi:10.1111/j.1096-3642.1982.tb02182.x
  2. ^ [1] Chromodoris lochi Rudman, 1982. Sea Slug Forum, accessed 14 october 2013.
  3. ^
  4. ^ Rudman W.B. & Bergquist, P.R., 2007. "A review of feeding specificity in the sponge-feeding Chromodorididae (Nudibranchia: Mollusca). Molluscan Research 27(2): 60–88.
  • Debelius, Helmut, 2001, Nudibranchs and Sea Snails: Indo-Pacific Field Guide, IKAN - Unterwasserarchiv, Frankfurt, Germany.
  • P.L.Beesley,G.J.B. Ross,A.Wells,Mollusca-The southern synthesis, vol.5, CSIRO, 1998,ISBN 0-643-05756-0
  • David Behrens, Nudibranch behaviour, Newworld Publication INC., 2005, ISBN 978-1878348418
  • Gary Cobb & Richard Willan, Undersea jewels- a colour guide to nudibranchs, Australian Biological Resources Study, 2006, ISBN 0642568472

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