Permit (fish)

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Permit
Trachinotus falcatus.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Carangiformes
Family: Carangidae
Genus: Trachinotus
Species:
T. falcatus
Binomial name
Trachinotus falcatus
Synonyms [2]

Labrus falcatusLinnaeus, 1758

The permit (Trachinotus falcatus) is a game fish of the western Atlantic Ocean belonging to the family Carangidae. Adults feed on crabs, shrimp, and smaller fish.

Contents

Taxonomy

The permit was originally classified as Labrus falcatus, though the fish has since been placed in the genus Trachinotus. [3] It is the type species of the genus Trachinotus. [4]

Etymology

The permit's genus name, Trachinotus comes from a fusion of the Greek words trachys ( τραχύς ), which means "rough", and noton ( νῶτον ), meaning "back". [5] The species name for the permit, falcatus , is a Latin adjective, which roughly means "armed with scythes". This serves as a reference to the permit's dorsal fin that occasionally protrudes from the water when schools of permit feed near the surface. [3]

"Permit", the common name, may be an irregular borrowing from Spanish palometa , probably from a Doric variant of Ancient Greek πηλαμύς (pēlamús, “young tuna”).

Anatomy and morphology

A preserved permit from the Gulf of Mexico Fish4502 - Flickr - NOAA Photo Library.jpg
A preserved permit from the Gulf of Mexico

Permit can be distinguished by their elongated dorsal fins and anal fin. [3] The dorsal fin is shaped like a scythe. Permit tails are also deeply forked, and their bodies are compressed laterally, making the fish tall and thin when viewed from the front. [3]

The average permit has six or seven dorsal spines, and 18 to 21 soft rays. The anal fin has two or three spines, and 16 to 18 soft rays. [2] Both dorsal and anal fins have dark, anterior lobes. [6] Permit have no scutes and have a large, orange-yellow patch on their abdomens in front of their anal fins, while their pectoral fins are dark. [7]

The permit fish can reach a maximum length of 122 cm and can weigh up to 36 kg, according to the Florida Museum of Natural History.

Distribution and habitat

Permit are usually found in shallow, tropical waters such as mudflats, channels, and muddy bottoms. [3] [2] Although permit are found close to shore and even in some brackish areas, they spawn offshore. [6] Young are found usually in the surf zone where small invertebrates are available for them to eat.

Permit are found in the western Atlantic Ocean from Massachusetts to Brazil, including most of the Caribbean islands. [2]

Two submarines of the United States Navy were named USS Permit in its honor, in keeping with the "denizens of the deep" theme of submarine names that prevailed before the 1971 naming of USS Los Angeles.

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References

  1. Smith-Vaniz, W.F.; Williams, J.T.; Pina Amargos, F.; Curtis, M.; Brown, J. (2015). "Trachinotus falcatus". IUCN Red List of Threatened Species . 2015: e.T190407A16510662. doi: 10.2305/IUCN.UK.2015-4.RLTS.T190407A16510662.en . Retrieved 19 November 2021.
  2. 1 2 3 4 Froese, Rainer; Pauly, Daniel (eds.) (2019). "Trachinotus falcatus" in FishBase . August 2019 version.
  3. 1 2 3 4 5 "Florida Museum of Natural History" . Retrieved 2008-03-03.
  4. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Trachinotus". Catalog of Fishes . California Academy of Sciences . Retrieved 18 November 2019.
  5. Romero, P., 2002. An etymological dictionary of taxonomy. Madrid, unpublished.
  6. 1 2 Smith, C.L., 1997. National Audubon Society field guide to tropical marine fishes of the Caribbean, the Gulf of Mexico, Florida, the Bahamas, and Bermuda. Alfred A. Knopf, Inc., New York. 720 p.
  7. Randall, J.E., 1996. Caribbean reef fishes. Third edition - revised and enlarged. T.F.H. Publications, Inc. Ltd., Hong Kong. 3rd ed. 368 p.