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Variable in colour with four distinct morphs. The normal morph encountered is translucent white with scattered yellow/orange patches on its dorsum and on the tips of the cerata, rhinophores and oral tentacles. The translucent white skin can be replaced by a purple-black or tawny orange/golden hue. An all-white form with the orange pigment replaced by white is common. All forms mentioned have been observed mating with each other, and their internal anatomy is apparently identical. The results of recent genetic analysis of the four morphs support the opinion that they are all one species. Mature specimens of Eubranchus farrani grow to 20mm in length. The white morph with yellow tipped cerata and tentacles is the form most likely to be confused with Eubranchus tricolor, however E. farrani may be easily distinguished by the presence of yellow pigment on the rhinophores, oral tentacles and dorsum.


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© National Museums Northern Ireland and its licensors

Source: Encyclopedia of Marine Life of Britain and Ireland

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