Bony fish · Perciformes · Uranoscopidae

Atlantic Stargazer

Uranoscopus scaber

Least Concern

The species is abundant and widely distributed; it faces no significant short-term risk. See full glossary

The Atlantic stargazer — known in Spanish as miracielo, pez rata or pejesapo — is a perciform fish of the family Uranoscopidae. No subspecies are recognised. It is commonly caught in nets and its flesh is considered to be of good quality.

Size

20 cm – 40 cm

Diet

Carnivore

Feeds mainly on other animals.

Activity

Nocturnal

Active mainly at night.

Social structure

Solitary

Lives and hunts alone, joining others only to breed.

Sighting difficulty

Easy

Fun facts

  • It has a lure on the floor of its mouth: a fleshy, worm-like appendage that it waves clear of the sand to draw small fish right up to its jaws.
  • It has two venomous spines behind the gill covers that inflict very painful wounds, and electric organs derived from the eye muscles with which it delivers weak shocks.
  • Its eyes, set on the top of the head, let it watch the whole water column while it stays buried.
  • Its eyes sit on top of its head, gazing at the sky — hence the Spanish name miracielo, the sky-watcher: it is the face of an animal that spends its life buried, looking upwards.
  • It fishes with a rod. From the floor of its mouth grows a fleshy filament that it waves like a worm to draw small fish within reach of its jaws.
  • It combines three unusual defences at once: venomous spines above the pectoral fins, electric organs behind the eyes capable of delivering a discharge, and the camouflage of burying itself.
  • Its attack is explosive: it sucks in its prey in milliseconds by snapping open its enormous vertical mouth.
  • It has been in the Mediterranean since ancient times and already appears in classical texts, where it was credited with powers of divination because of its skyward gaze.

Life cycle & biology

Skeleton type
Vertebrate - internal bony skeleton (fish)
Habitat & environment
Sandy and muddy bottoms of the Mediterranean and the eastern Atlantic, from 15 to 400 m

Sources consulted: https://es.wikipedia.org/wiki/Uranoscopus_scaber

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