Nemadactylus macropterus

Cheilodactylidae
Jackass Morwong
  • Nemadactylus macropterus, Port Davey, TAS, Photo: Ian Shaw
    Nemadactylus macropterus, Port Davey, TAS, Photo: Ian Shaw
  • Nemadactylus macropterus, Hobart, TAS, Photo: Rick Stuart-Smith
    Nemadactylus macropterus, Hobart, TAS, Photo: Rick Stuart-Smith
  • Nemadactylus macropterus, Hobart, TAS, Photo: Rick Stuart-Smith
    Nemadactylus macropterus, Hobart, TAS, Photo: Rick Stuart-Smith
Distribution
Temperate Africa, Temperate Australasia, Temperate South America
Description
Silver body with a black crescent-shaped marking at the back of the head. It usually occurs below 50 m depth, but schools sometimes enter relatively shallow water in Tasmania and juveniles are found in deep estuaries.
Information
  • Max Size: 70 cm
  • Sea Temperature Range: 10.4-23.4°C
  • Depth: 5-400m
  • Habitat: Soft sediment
Rarity
  • IUCN Threat Status: Not Evaluated
  • Occurrence: Infrequent (4% 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: Few (4 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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