Berthellina citrina

Pleurobranchidae
Orange Side-gilled Slug
  • Berthellina citrina, NSW, Australia, Photo: Tom Davis
    Berthellina citrina, NSW, Australia, Photo: Tom Davis
  • Berthellina citrina, Narooma, NSW, Photo: Andrew Green
    Berthellina citrina, Narooma, NSW, Photo: Andrew Green
  • Berthellina citrina, Port Davey, TAS, Australia, Photo: Ian Shaw
    Berthellina citrina, Port Davey, TAS, Australia, Photo: Ian Shaw
Distribution
Temperate Australasia, Tropical Indo-Pacific
Description
Colour varies from pale to dark orange. Glands across mantle appear as white spots. Cylindrical shape and uniform colour, which can be either yellow or orange. Two prominent rhinophores, which are fused at their base, project out from under the front of the mantle. The species feeds on sponges.
Information
  • Max Size: 5 cm
  • Sea Temperature Range: 12.3-23.9°C
  • Depth: 0-60m
  • Habitat: Rocky Reef
Rarity
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Rare (1% of sites)
    Occurrence describes how often the species is found on surveys within its distribution. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed
  • Abundance: Solitary (1 per transect)
    Abundance is calculated as the average number of individuals recorded per RLS transect, where present.
Edit by: GJ Edgar. 2008. Australian Marine Life. New Holland, Sydney
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