Uranoscopus scaber  Linnaeus, 1758

Stargazer
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Uranoscopus scaber
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Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Uranoscopidae (Stargazers)
Etymology: Uranoscopus: Greek, ouranos = sky + Greek skopein = to watch (Ref. 45335).   More on author: Linnaeus.

Environment / Climate / Range Ecology

Marine; demersal; depth range 15 - 400 m (Ref. 6763).   Subtropical; 62°N - 16°N, 19°W - 37°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Atlantic and Mediterranean Sea.

Length at first maturity / Size / Weight / Age

Maturity: Lm 14.0, range 17 - 18 cm
Max length : 40.0 cm TL male/unsexed; (Ref. 7366); common length : 22.0 cm TL male/unsexed; (Ref. 3397); max. published weight: 940.00 g (Ref. 40637)

Biology     Glossary (e.g. epibenthic)

The shoulder spines can inflict, painful stings. Usually found buried in the sand or mud. Equipped with an acoustic apparatus that generates both acoustic and electric pulses. Electric discharge activity shows two temporal patterns: 1) reflexive discharges of short duration (milliseconds), elicited by mechanical stimulation, and 2) those of much longer duration (several seconds) observed only during the summer spawning period (Ref. 10011). Low-frequency spontaneous discharge activity (5-10 Hz), with a sexual dimorphism in discharge amplitude is also said to exist. This species suggestively represents a transitional form in the evolution of electric organs in fishes (Ref. 10577). Oviparous, eggs, larvae and juveniles are pelagic (Ref. 6763). Utilized fresh (Ref. 9987).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Roux, C., 1990. Uranoscopidae. p. 897-898. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 7366)

IUCN Red List Status (Ref. 115185)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Venomous (Ref. 4690)




Human uses

Fisheries: minor commercial; gamefish: yes
FAO(fisheries: production; publication : search) | FisheriesWiki | Sea Around Us

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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00846 - 0.01421), b=3.06 (2.98 - 3.14), in cm Total Length, based on LWR estimates for this species (Ref. 93245).
Trophic Level (Ref. 69278):  4.4   ±0.70 se; Based on food items.
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (tm=2).
Prior r = 0.81, 2 SD range = 0.49 - 1.31, log(r) = -0.21, SD log(r) = 0.25, Based on: 2 K, 2 tgen, 1 tmax, records
Vulnerability (Ref. 59153):  Moderate vulnerability (44 of 100) .
Price category (Ref. 80766):   Unknown.