Spotted trunkfish

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Spotted trunkfish
Spotted Trunkfish.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Tetraodontiformes
Suborder: Ostracioidea
Family: Ostraciidae
Genus: Lactophrys
Species:
L. bicaudalis
Binomial name
Lactophrys bicaudalis
Synonyms [2]
  • Ostracion bicaudalis Linnaeus, 1758
  • Rhinesomus bicaudalis (Linnaeus, 1758)

The spotted trunkfish (Lactophrys bicaudalis) is a member of the family Ostraciidae. It lives in reefs throughout the Caribbean, as well as the southwestern Atlantic Ocean. It gets its name from the black spots on its whitish or yellow-golden body. In Caribbean countries, it is colloquially known as the boxfish, cow-fish or shellfish. [3]

Contents

Taxonomy

The spotted trunkfish was first formally described as Ostracion bicaudalis in 1758 by Carl Linnaeus in the 10th edition of Systema Naturae with its type locality given as "India". [4] The 5th edition of Fishes of the World classifies the genus Lactophrys within the family Ostraciidae in the suborder Ostracioidea within the order Tetraodontiformes. [5]

Etymology

The spotted trunkfish is a member of the genus Lactophrys, a name which is a compound of lactaria, meaning a "milkcow", and ophrys, meaning "eyebrow", a reference to the spines above the eyes resembling the horns of a cow. Some fishes in this family are known as cowfishes. The specific name, bicaudalis, means "two tailed", a reference to the two spines "below the tail", a mystery because this fish does not have any spines under its tail but there are two spines on either side of the anal fin. [6]

Description

Members of this family are known as boxfishes because they have a hard outer covering consisting of hexagonal plate-like scales fused together into a solid, triangular or box-like carapace. [7]

Shell-fish caught in St. Kitts and Nevis Spotted-Trunkfish-Caught-In-SKN.jpg
Shell-fish caught in St. Kitts and Nevis

The eyes, snout, fins and tail protrude from this. The spotted trunkfish is basically white or yellowish with a regular pattern of numerous black spots on the body and tailfin. Just behind the eye, adult fish have a diagonal row of three white spots where black ones would have been expected. The snout is plain white, with no spines above the eye and a pair of sharp spines in front of the anal fin. [8]

Distribution and habitat

The spotted trunkfish is found in the Caribbean Sea, the southern half of the Gulf of Mexico, Ascension Island and the northeastern coast of South America as far east as Brazil. It prefers clear water and is usually associated with coral reefs with fissures, holes and overhangs, at depths down to about 30 m (100 ft). [2]

Ecology

Because of the heavy armoured scales, the spotted trunkfish is normally limited to slow movements, performed by rippling its dorsal and anal fins and gently beating its pectoral fins. If faster motion is required, it can additionally use the tail fin for propulsion. [8] It is a benthic species, feeding on or near the seabed. Its diet includes crabs, shrimps, molluscs, sea urchins, starfish, brittle stars, sea cucumbers, tunicates and seagrasses. [2]

The spotted trunkfish, like all trunkfish of the genus Lactophrys , secretes a colourless toxin from glands on its skin when touched. The toxin is only dangerous when ingested, so there is no immediate harm to divers. Predators as large as nurse sharks can die from eating a trunkfish. [9]

Related Research Articles

<span class="mw-page-title-main">Ostraciidae</span> Family of boxfishes

Ostraciidae or Ostraciontidae is a family of squared, bony fish belonging to the order Tetraodontiformes, closely related to the pufferfishes and filefishes. Fish in the family are known variously as boxfishes, cofferfishes, cowfishes and trunkfishes. It contains about 23 extant species in 6 extant genera.

<span class="mw-page-title-main">Scrawled cowfish</span> Species of fish

The scrawled cowfish is a species of marine ray-finned fish belonging to the family Ostraciidae, the boxfishes. This species is found in the Western Atlantic Ocean.

<span class="mw-page-title-main">Sailfin snapper</span> Species of fish

The sailfin snapper, blue-lined sea bream or blue-lined sea perch is a species of marine ray-finned fish, a snapper belonging to the family Lutjanidae. It is native to the Indo-Pacific region. The sailfin snapper is targeted in mixed-species fisheries throughout its range. In areas such as the Philippines it is known to be overfished, while in others, for example Palau, pressure is lighter. It is caught predominantly using handlines and bottom trawling. The juveniles appear in the aquarium trade. It is currently the only known member of its genus.

<span class="mw-page-title-main">Smooth trunkfish</span> Species of fish

Lactophrys triqueter the smooth trunkfish, is a species of marine ray-finned fish belonging to the family Ostraciidae, the boxfishes. The smooth trunkfish is found in the Western Atlantic Ocean.

<i>Caprichthys</i> Monospecific genus of fish

Caprichthys is a monospecific genus of marine ray-finned fish belonging to the family Aracanidae, the deepwater boxfishes or temperate boxfishes. The only species in the genus is the rigid boxfish, also known as the black-spotted boxfish or ornate pigmy boxfish which is endemic to southwestern Australia.

<i>Capropygia</i> Monospecific genus of fish

Capropygia is a monospecific genus of marine ray-finned fish belonging to the family Aracanidae, the deepwater boxfishes or temperate boxfishes. The only species in the genus is the black-banded pigmy boxfish, also known as the spiny boxfish which is endemic to southern Australia.

Polyplacapros is a monospecific genus of ray-finned fish beloning to the family Aracanidae, the temperate boxfishes or deep water boxfishes. The only species in the genus is Polyplacapros tyleri, Tyler's boxfish, which is found in the southwestern Pacific Ocean.

<i>Acanthostracion</i> Genus of fishes

Acanthostracion is a genus of marine ray-finned fishes belonging to the family Ostraciidae, the boxfishes. These fishes are found in the Atlantic Ocean.

<i>Lactophrys</i> Genus of fishes

Lactophrys is a genus of marine ray-finned fishes belonging to the family Ostraciidae, the boxfishes. The boxfishes in this genus are found in the western Atlantic Ocean and are known as trunkfishes.

<i>Aracana ornata</i> Species of fish

Aracana ornata, the ornate cowfish or ornate boxfish, is a species of marine ray-finned fish belonging to the family Aracanidae, the deepwater boxfishes or temperate boxfishes. This species is endemic to the seas off southern Australia.

<i>Aracana aurita</i> Species of fish

Aracana aurita, Shaw's cowfish, painted boxfish, Southern cowfish or striped cowfish, is a species of marine ray-finned fish belonging to the family Aracanidae, the deepwater boxfishes or temperate boxfishes. This species is endemic to the seas off southern Australia.

<i>Ogcocephalus corniger</i> Species of fish

Ogcocephalus corniger, the longnose batfish, is a species of ray-finned fish belonging to the family Ogcocephalidae, the deep sea batfishes. This fish is found at depths between 29 and 230 m in the Atlantic Ocean, ranging from North Carolina to the Gulf of Mexico and the Bahamas. Like other members of the family Ogcocephalidae, it has a flat triangular body with coloring varying from yellowish to purple with pale, round spots. The lips are orange-red. Projecting from its head is a characteristic structure that is shared by other anglerfish.

<i>Lactophrys trigonus</i> Species of fish

Lactophrys trigonus, the buffalo trunkfish or trunkfish, is a species of marine ray-finned fish belonging to the family Ostraciidae, the boxfishes. The buffalo trunkfish is found in the the Western Atlantic Ocean.

<i>Anoplocapros lenticularis</i> Species of fish

Anoplocapros lenticularis, the white-barred boxfish, flame boxfish, high-backed boxfish, humpback boxfish, humpty dumpty or smooth boxfish, is a species of marine ray-finned fish belonging to the family Aracanidae, the deepwater boxfishes or temperate boxfishes. This fish is endemic to the seas of southern and western Australia.

<i>Siganus punctatus</i> Species of fish

Siganus punctatus the goldspotted spinefoot, goldspotted rabbitfish, punctuated spinefoot, spotted rabbitfish, spotted spinefoot or yellow-spotted spinefoot, is a species of marine ray-finned fish, a rabbitfish belonging to the family Siganidae. It occurs in the Indo-West Pacific region.

<span class="mw-page-title-main">Island cowfish</span> Species of fish

The island cowfish, also known as the hogfish, bottlefish boxfish or island boxfish, is a species of marine ray-finned fish belonging to the family Ostraciidae, the cowfishes. This fish is found around the islands of the mid-Atlantic Ocean and has beeen recorded from Western Africa.

<span class="mw-page-title-main">Ostracioidea</span>

Ostracioidea or Ostracioidei, the boxfishes, is a suborder of ray-finned fishes belonging to the order Tetraodontiformes, which also includes the pufferfishes, filefishes and triggerfishes. The fishes in this taxon are found in the Atlantic, Indian and Pacific Oceans.

<span class="mw-page-title-main">Western smooth boxfish</span> Species of fish

The Western smooth boxfish, also known as the blue boxfish or robust boxfish, is a species of marine ray-finned fish belonging to the family Aracanidae, the deep water boxfishes or temperate boxfishes. This fish is endemic to the seas of southwestern Australia.

<span class="mw-page-title-main">Eastern smooth boxfish</span> Species of fish

The Eastern smooth boxfish, also known as the chubby basketfish, freckled boxfish, golden boxfish, polled boxfish, robust boxfish or white-barred boxfish, is a species of marine ray-finned fish belonging to the family Aracanidae, the deepwater boxfishes or tempereate boxfishes. This fish is endemic to the seas of southeastern Australia.

Kentrocapros rosapinto, the basketfish, is a species of marine ray-finned fish belonging to the family Aracanidae, the temperate boxfishes or deepwater boxfishes. This fish is found in the Western Indian Ocean and in the southeastern Atlantic Ocean.

References

  1. Leis, J.L.; Matsuura, K.; Shao, K.-T.; et al. (2015). "Lactophrys bicaudalis". IUCN Red List of Threatened Species . 2015: e.T190106A1940651. doi: 10.2305/IUCN.UK.2015-4.RLTS.T190106A1940651.en . Retrieved 2 June 2023.
  2. 1 2 3 Froese, Rainer; Pauly, Daniel (eds.). "Lactophrys bicaudalis". FishBase . June 2024 version.
  3. Allsopp, Richard (1996). Dictionary of Caribbean English Usage. p.  174. ISBN   9789766401450.
  4. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Lactophrys". Catalog of Fishes . California Academy of Sciences . Retrieved 5 October 2024.
  5. Nelson, J.S.; Grande, T.C.; Wilson, M.V.H. (2016). Fishes of the World (5th ed.). Hoboken, NJ: John Wiley & Sons. pp. 518–526. doi:10.1002/9781119174844. ISBN   978-1-118-34233-6. LCCN   2015037522. OCLC   951899884. OL   25909650M.
  6. Christopher Scharpf (21 August 2024). "Order TETRAODONTIFORMES: Families MOLIDAE, BALISTIDAE, MONACANTHIDAE, ARACANIDAE and OSTRACIIDAE". Christopher Scharpf. Retrieved 5 October 2024.
  7. "Species: Lactophrys bicaudalis, Spotted Trunkfish". Shorefishes of the Greater Caribbean online information system. Smithsonian Tropical Research Institute . Retrieved 4 October 2024.
  8. 1 2 M. De Kluijver; G. Gijswijt; R. de Leon; I. da Cunda. "Spotted trunkfish: Lactophrys bicaudalis". Interactive Guide to Caribbean Diving. Marine Species Identification Portal. Retrieved 21 July 2020.
  9. Maurice Burton; Robert Burton (2002). International Wildlife Encyclopedia. New York: Marshall Cavendish. pp. 2759–2759. ISBN   0-7614-7286-X.