Astroscopus

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Astroscopus
Northern Stargazer.JPG
Northern stargazer (A. guttatus)
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Labriformes
Family: Uranoscopidae
Genus: Astroscopus
Brevoort, 1860 [1]
Type species
Uranoscopus anoplos [2]
Synonyms

Astroscopus, the electric stargazers, is a genus of stargazers, a type of percomorph fish from the family Uranoscopidae, part of the order Labriformes. [3] The species in this genus are anatomically distinct uranoscopids, being characterized by internal nares and being the only group of marine bony fish having organs which produce electricity which are derived from the extraocular muscles. They are found on the Atlantic and Pacific coasts of the Americas. [4]

Species

There are four extant and one extinct species included in Astroscopus: [5]

Pacific stargazer (A. zephyreus) Astroscopus zephyreus 254703040.jpg
Pacific stargazer (A. zephyreus)

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<i>Astroscopus guttatus</i> Species of fish

Astroscopus guttatus or the northern stargazer is a fish belonging to the Uranoscopidie family and was first described by Charles Conrad Abbott in 1860. Members of the Uranoscopidae family are characterized by dorsally or dorsolaterally directed eyes placed on or near the top of a large, flattened cuboid head, an oblique to vertical mouth often lined with cutaneous cirri, and an elongated, sub-compressed body. The Astroscopus genus consists of three species: Astroscopus guttatus, Astroscopus Y-graecum, and Astroscopus zepherus. Typically found on the Atlantic shores between the states of North Carolina and New York in the United States, the Northern Stargazer can sometimes be confused with its sister species the Southern Stargazer, Astroscopus y-graecum. Both A. guttatus and A. Y-graecum overlap in their distributions in Cape Hatterus One way to distinguish the Northern Stargazer from the Southern Stargazer is by the presence of numerous small white spots closely spaced along its head and back, whereas the Southern Stargazer has fewer, larger spots on its back. The Northern Stargazer is a moderately sized fish that can reach lengths of 22 inches (56 cm). The northern stargazer can be found buried in sandy substrate at depths up to 120 feet where the species remains buried awaiting prey. Stargazers have a flat forehead with a lot of body mass up front near the mouth creating a body plane optimal for remaining buried under sandy substrate.

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References

  1. Bailly N, ed. (2014). "Astroscopus Brevoort, 1860". FishBase . World Register of Marine Species . Retrieved 21 June 2018.
  2. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Astroscopus". Catalog of Fishes . California Academy of Sciences . Retrieved 20 June 2018.
  3. "Eschmeyer's Catalog of Fishes Classification - California Academy of Sciences". www.calacademy.org. Retrieved 10 November 2024.
  4. 1 2 Carnevale, Godfrey; Pietsch (2011). "Stargazer (Teleostei, Uranoscopidae) Cranial Remains from the Miocene Calvert Cliffs, Maryland, U.S.A. (St. Marys Formation, Chesapeake Group)". Journal of Vertebrate Paleontology. 31 (6): 1200–1209. doi:10.1080/02724634.2011.606856.
  5. Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Astroscopus". FishBase . February 2018 version.