Ornate wrasse

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Ornate wrasse
Female Thalassoma pavo.JPG
female
Pez verde (Thalassoma pavo), Cabo de Palos, Espana, 2022-07-16, DD 73.jpg
male
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Labriformes
Family: Labridae
Genus: Thalassoma
Species:
T. pavo
Binomial name
Thalassoma pavo
(Linnaeus, 1758)
Synonyms [2]
  • Labrus pavoLinnaeus, 1758
  • Chlorichthys pavo(Linnaeus, 1758)
  • Julis pavo(Linnaeus, 1758)
  • Labrus syriacus Bloch & J. G. Schneider, 1801
  • Labrus leo Rafinesque, 1810
  • Julis squamimarginatus S. Bowdich, 1825
  • Julis turcica Risso, 1827
  • Julis blochii Valenciennes, 1839
  • Julis unimaculata R. T. Lowe, 1841
  • Thalassoma unimaculatum(R. T. Lowe, 1841)
  • Julis unimaculata lineolataR. T. Lowe, 1841
  • Julis unimaculata taeniataR. T. Lowe, 1841
  • Thalassoma pavo taeniata(R. T. Lowe, 1841)
  • Julis turcica torquataR. T. Lowe, 1843
  • Thalassoma pavo torquata(R. T. Lowe, 1843)
  • Julis turcica lemniscataR. T. Lowe, 1843
  • Thalassoma pavo lemniscata(R. T. Lowe, 1843)
  • Julis vulgarisValenciennes, 1843

The ornate wrasse (Thalassoma pavo) is a species of wrasse native to the rocky coasts of the eastern Atlantic Ocean and the Mediterranean Sea. This species, commonly known as the circus fish, is of minor importance to local commercial fisheries, is also popular as a game fish, and can be found in the aquarium trade.

Contents

Description

The ornate wrasse shows sexual dichromatism. the females are greenish-brown with a dark bar on each scale and five bluish vertical stripes. Males have red heads with blue markings. Situated immediately to the rear of the pectoral fin they have a vertical blue stripe with red margins. [3] The caudal fin in both sexes is turquoise. [4] The juveniles are green overall and have a black spot halfway along the back, positioned immediately below the dorsal fin. [5] The body is elongated and laterally compressed with a sharp, oval head. The snout is short with a small, terminal mouth and thick lips. In younger fish the caudal fin and as the fish matures it becomes concave with elongated outer rays forming filaments. [3] It can reach 25 cm (9.8 in) in length, though most do not exceed 20 cm (7.9 in). [2] The dorsal fin has eight spines and 12-13 soft rays while the anal fin has three spines and 10-12 soft rays. [6]

A group of ornate wrasse off Attica, Greece Ornatewrassegroup.jpg
A group of ornate wrasse off Attica, Greece

Distribution

The ornate wrasse is a species of the eastern Atlantic Ocean and the Mediterranean Sea. In the eastern Atlantic it occurs from Portugal southwards along the coast of West Africa as far as Senegal. It also occurs around the Macaronesia, archipelagoes of the Cape Verde Islands, Canary Islands, Madeira, Salvage Islands and the Azores. In the Mediterranean it occurs all along the African and Asian coasts and most of the northern coasts except for the northern parts of the Adriatic and some parts of the north western Mediterranean. [1] However, global warming may be allowing ornate wrasse to extend its range northwards and it has increasingly been collected in the Ligurian Sea [7] and off Provence. It is absent from the Black Sea. [5]

Habitat and biology

The ornate wrasse occurs in on rocky areas where there are growths of algae and Posidonia sea grass beds, it is found from 0 to 50 metres (0 to 164 ft). [3] It can also be found living in anthropogenic structures including shipwrecks, piers and jetties. [1] The females and the juvenile normally live in small groups while the adult males are solitary. In the breeding season the males become territorial and guard a harem. [3] Its diet consists of small molluscs and crustaceans and the juveniles will act as cleaner fish, feeding on the ectoparasites taken off the skin of other fishes. [1] As it hunts for this prey it swims with quick jerky movements. [5] They bury into sandy areas at night by vigorously shaking their tail, spending the night on their sides in the sand. [3]

The ornate wrasse is a protogynous hermaphrodite and females may transform into males which is signified by a change of colour. This means that the population is dominated by a large number of young, fertile females which can produce a large number of eggs. The older and larger solitary males are fewer in numbers as they suffer from a greater predation pressure. [3] Spawning occurs in the spring and the eggs are pelagic. [8]

Human usage

The ornate wrasse is a quarry species for local fisheries in the eastern Mediterranean and in the Macaronesian archipelagoes, it is fished for using both hook and line and traps. It is also found in the aquarium trade. [1]

Species description

The ornate wrasse was originally formally described in 1758 as Labrus pavo by Carolus Linnaeus in Volume X of the Systema Naturae and the type locality was given as Syria. [9]

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References

  1. 1 2 3 4 5 Pollard, D.; Afonso, P. (2010). "Thalassoma pavo". IUCN Red List of Threatened Species . 2010: e.T187418A8530118. doi: 10.2305/IUCN.UK.2010-4.RLTS.T187418A8530118.en . Retrieved 20 November 2021.
  2. 1 2 Froese, Rainer; Pauly, Daniel (eds.) (2019). "Thalossoma pavo" in FishBase. August 2019 version.
  3. 1 2 3 4 5 6 "Ornate Wrasse". L’Aquàrium Barecelona. Retrieved 2 February 2020.
  4. ↑ "Ornate Wrasse – Thalassoma pavo". diving-canary-islands.com.
  5. 1 2 3 "Ornate wrasse". Institut océanographique Paul Ricard. 14 February 2019. Retrieved 2 February 2020.
  6. ↑ J.C Hureau (ed.). "Fishes of the NE Atlantic and Mediterranean". Marine Species Identification Portal. ETI Bioinformatics. Retrieved 2 February 2020.
  7. ↑ Vacchi M; Morri C; Modena M; et al. (2001). "Temperature changes and warm-water species in the Ligurian Sea: the case of the ornate wrasse Thalassoma pavo (Linnaeus, 1758)". Archo Oceanogr.Limnol. 22: 149–154. Abstract
  8. ↑ "Ornate Wrasse – Thalassoma Pavo". We Heart Diving. 15 March 2013. Retrieved 2 February 2020.
  9. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Labrus pavo". Catalog of Fishes . California Academy of Sciences . Retrieved 2 February 2020.
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