Echeneis naucrates

Sharksucker | Australian Remora | Gapu | Live Sharksucker | Remora | Shark Remora | Slender Sharksucker | Slender Suckerfish | Striped Suckerfish | Suckerfish | White Tailed Remora
Echeneis naucrates
Echeneis naucrates, Osprey Reef, Coral Sea, Photo: Graham Edgar
Echeneis naucrates
Echeneis naucrates, Photo: Rick Stuart-Smith
Echeneis naucrates
Echeneis naucrates, New Year Island, Northern Territory, Australia, Photo: Graham Edgar
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Echeneis naucrates
Echeneis naucrates
Echeneis naucrates


Temperate Australasia, Temperate northern Atlantic, Tropical Atlantic/Caribbean, Tropical Eastern Pacific, Tropical Indo-Pacific


Flattened head with broad sucking disc on top, wide black stripe central along body with light bluish-white stripes either side, tailfin black with white margin, dorsal and anal fins similar in profile, arranged symmetrically midway along body. Follows and attaches to larger mobile fishes such as mantas and sharks, will also occasionally try to attach to divers. Difficult to distinguish from closely related Echeneis neucratoides (Whitefin Sharksucker) which occurs only in the western central Atlantic. More slender body than Rachycentron canadum (Cobia), which also lacks suction plate. Length to 110 cm. Used as a fishing aid in some parts of the world. A line is tied around the tail of the sharksucker and it is then released back into the water to attach itself to a host. The host and shark sucker are then pulled in by the fisherman.


Max Size: 110 cm

Sea Temperature Range: 19.5-31.2°C

Depth: 1-85m

Habitat Generalization Index: 7.22

Also referred to as the SGI (Species Generalisation Index), this describes the habitat niche breadth of the species. Species with values less than 15 are found in a relatively narrow range of reef habitat types (specialists), while those over 25 may be found on most hard substrates within their range (generalists). Learn more here.

Conservation and Rarity

IUCN Status: Not Evaluated

Occurrence: Infrequent (4.1% 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: Few (2 per transect)

Abundance is calculated as the average number of individuals recorded per RLS transect, where present.

Edit by: RD Stuart-Smith, GJ Edgar, AJ Green, IV Shaw. 2015. Tropical Marine Fishes of Australia. Reed New Holland