Depth
Uranoscopus · Bony Fish

Atlantic Stargazer

Uranoscopus scaber

0-40m
Depth Range
Variable
Max Size
Mediterranean
Distribution
0-40m
Depth Range
Variable
Max Size
Reef & Open
Habitat
Carnivore
Diet
Solitary
Social
LC
IUCN Status
Kingdom Animalia
Phylum Chordata
Class Actinopterygii
Genus Uranoscopus
Species scaber

Bony Fish

Identification & Biology

  • IdentificationStocky, robust body with a massive, flat head and eyes positioned on top, directed upwards. Large, vertically-oriented mouth. Brown to grey body with white spots. An electric organ is present behind each eye.
  • SizeUp to 35 cm total length, commonly 15 to 25 cm.
  • Social HabitSolitary ambush predator. Buries itself in sand with only the eyes and mouth exposed.
  • HabitatSandy and muddy bottoms from the shallows to moderate depths. Buries almost completely in sediment.
  • Depth2 to 200 m, most common between 10 and 60 m.
  • Feeds OnSmall fish and invertebrates that pass over its buried position. Uses a lure-like appendage inside the mouth to attract prey.
  • DistributionEastern Atlantic from the Bay of Biscay to West Africa, including the Mediterranean Sea.
  • DescriptionA remarkable ambush predator that buries itself in sand and waits for prey to wander overhead. It possesses an electric organ behind each eye that can deliver a mild shock. The upward-facing eyes and vertical mouth are perfectly adapted to striking upward at unsuspecting prey from below.

Range

Habitat & Distribution

Found across the Mediterranean, inhabiting reef & open environments. Active from the surface down to 40m depth.

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

Reef & Open habitats, typically at depths of 0-40m. Most commonly encountered by divers at the shallower end of its range.

Encounter Tips

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

Atlantic Stargazer species card

Biology

Behaviour & Diet

Feeding Strategy

Buries itself in sand with only its eyes and mouth exposed, ambushing fish and crustaceans that pass overhead. Also uses a worm-like lure inside its mouth to attract prey.

Ambush predator

Reproduction

Spawns pelagic eggs in spring and summer. The transparent larvae are planktonic and drift in open water before settling to the seabed.

Egg layer

Behaviour & Defence

Possesses a venomous spine above each pectoral fin capable of delivering a painful sting. Also has electric organs behind the eyes that can produce a weak electric shock.

Venomous spines

Dive with diveshack

Where to Encounter in Malta

The following dive sites offer strong habitat match for Uranoscopus scaber. All are accessible on a guided dive with diveshack.

5-30m
North Malta

Cirkewwa

Rocky reef with caves, arches and ledges hosting a rich diversity of reef species.

View dive site ›
5-50m
Gozo

Blue Hole

One of the Med's most famous reef dive sites. Rocky walls and archways covered in life.

View dive site ›
18-36m
South Malta

Um El Faroud

The wreck lies on a sandy bottom surrounded by rocky reef -- a diverse habitat attracting reef species.

View dive site ›
IUCN Red List Least 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 to prey availability.

Source: iNaturalist Guide #888
by Lesley Clements (CC BY-SA)
diveshack Mediterranean Marine Life guide