''Ceratosoma bicolor'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

sea slug Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary time ...

or dorid

nudibranch Nudibranchs () are a group of soft-bodied marine gastropod molluscs which shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to match, ...

, a marine gastropod

mollusk Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is e ...

in the

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Chromodorididae Chromodorididae, or chromodorids, are a taxonomic family of colourful, sea slugs; dorid nudibranchs, marine gastropod mollusks in the superfamily Doridoidea. “Chromodorid nudibranchs are among the most gorgeously coloured of all animals.� ...

.MolluscaBase (2018)
''Ceratosoma bicolor'' Baba, 1949.
Accessed on 2019-01-30. It is possible that this species is a colour variation of ''

Ceratosoma trilobatum ''Ceratosoma trilobatum'' is a species of colorful dorid nudibranch, a sea slug, a shell-less marine gastropod mollusk in the family Chromodorididae. Distribution This sea slug was described from India. It is widespread throughout the tropical w ...

Distribution

This species was described from Japan.Rudman, W.B., 2001 (August 20
''Ceratosoma bicolor'' Baba, 1949.
nSea Slug Forum. Australian Museum, Sydney.

Description

Anatomically indistinguishable from ''

'' but with a distinctive colour pattern.Kimoto, N., 2019
''Ceratosoma bicolor''
Seaslug World, accessed, 2019-01-30.

Ecology

References

{{Taxonbar, from=Q5063812 Chromodorididae Gastropods described in 1949