Depth
Gaidropsarus · Bony Fish

Shore Rockling

Gaidropsarus mediterraneus

0-30m
Depth Range
50cm
Max Size
Mediterranean
Distribution
0-30m
Depth Range
50cm
Max Size
Rocky / Intertidal
Habitat
Carnivore
Diet
Solitary
Social
LC
IUCN Status
Moderate
Sighting Likelihood
KingdomAnimalia
PhylumChordata
ClassActinopterygii
GenusGaidropsarus
Speciesmediterraneus

Bony Fish

Identification & Biology

  • IdentificationElongated, eel-like body with three barbels: one on the chin and two on the upper lip. Dark brown to reddish-brown body. Two dorsal fins, the first reduced to a single ray followed by a fringe of vibrating cilia.
  • SizeUp to 25 cm total length, commonly 10 to 18 cm.
  • Social HabitSolitary and nocturnal. Hides in rocky crevices and under stones during the day.
  • HabitatRocky reefs, boulders, and mixed substrates in the shallows. Found in crevices and under overhangs.
  • Depth1 to 30 m, most common between 3 and 15 m.
  • Feeds OnSmall crustaceans, worms, and other invertebrates found in rocky crevices.
  • DistributionMediterranean Sea. An endemic species.
  • DescriptionA small, secretive fish that lives in rocky crevices and ventures out mainly at night. Its three barbels help it detect prey in the dark. The vibrating first dorsal fin creates water currents that are thought to help detect nearby objects. A charming nocturnal reef inhabitant.

Range

Habitat & Distribution

Found among rocks, boulder fields, and tide pools in the intertidal and shallow subtidal zone down to about 30 metres. Common along the Maltese rocky coastline and inside harbours.

Where Malta divers have spotted this species

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Sightings are logged by divers using our What Did You See? dive-log tool. View the full live sightings map.

Detail

Preferred Environment

Dark rocky crevices, under boulders, and in gaps within harbour walls. Prefers sheltered areas with plentiful hiding spots.

Encounter Tips

Best approached slowly and calmly. Avoid casting shadows directly over the animal. Neutral buoyancy and patience increase encounter success significantly.

Shore Rockling species card

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Where to Encounter in Malta

Dive sites where Gaidropsarus mediterraneus may be encountered will be added as sighting data is collected.

IUCN Red ListLeast Concern

Conservation Status

This species is assessed as Least Concern on the IUCN Red List. Mediterranean populations face ongoing pressure from fishing activity, habitat degradation, and climate-driven changes.

Source: IUCN Red List
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