Datnioides undecimradiatus

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Datnioides undecimradiatus
Datnioides undecimradiatus (Roberts & Kottelat, 1994).jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Spariformes
Family: Lobotidae
Genus: Datnioides
Species:
D. undecimradiatus
Binomial name
Datnioides undecimradiatus
(Roberts & Kottelat, 1994)
Synonyms [2]
  • Coius undecimradiatusRoberts & Kottelat, 1994

Datnioides undecimradiatus, the Mekong tiger perch is a species of freshwater fish belonging to the family Lobotidae, the triplefins and tiger perches. This species is endemic to the lower and middle Mekong basin in Indochina.

Contents

Taxonomy

Datnioides undecimradiatus was first formally described as Coius undecimradiatus in 1994 by the ichthyologists Tyson R. Roberts and Maurice Kottelat with its type locality given as the Mekong River, a few kilometres downstream from the Lee Pee (or Khone) waterfalls in Laos. [3] In 2000 Kottelat determined that the type species of the genus Coius, Coius cobojius, was a junior synonym of Anabas testudineus so Coius is a junior synonym of Anabas , with Datnioides being the correct name for the tiger perch genus. [4] The 5th edition of the Fishes of the World classifies this genus as one of two genera in the family Lobotidae, alongside the tripletails in the genus Lobotes , which it places in the order Spariformes. [5]

Etymology

Datnioides undecimradiatus has the specific name undecimradiatus, meaning "eleven rayed", a reference to the typical number of soft rays in the anal fin. [6]

Description

Datnioides undecimradiatus has the toothless palatine and vomer characteristic of the tiger perches, as is the rounded caudal fin is rounded and rounded lobes on the anal and second dorsal fins creating the appearance of having three caudal fins. [7] The dorsal fin is supported by 12 spines and between 16 and 19 soft rays while the anal fin contains 3 spines and 11 or 12 soft rays. The depth of the body is just under half of the standard length. [2] The body is marked with four relatively slender dark bars which do not normally extand as far as the ventral surface of the body. [8] This species has a maximum published standard length of 40 cm (16 in). [2]

Distribution and habitat

Datnioides undecimradiatus is endemic to the lower Mekong Basin of Mainland Southeast Asia and is found in Thailand, Cambodia, Laos and Vietnam. [1] It is a predatory species which occurs in both main channels of rivers and their tributaries. [2]

Conservation

Datnioides undecimradiatus is caught for food and the aquarium trade. Almost all the fish in the aquarium trade are wild caught juveniles, [1] although Indonesian aquarists may have successfully bred this species in captivity. They are rare and sought after as aquarium fish and command high prices. [9] The Mekong tiger perch has been overexploited within its range, especially in Thailand, and the population ha significantly declined leading the IUCN to assess its status as Vulnerable. [1]

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<i>Datnioides polota</i> Species of fish

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<i>Datnioides campbelli</i> Species of fish

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References

  1. 1 2 3 4 Baird, I. (2020) [errata version of 2011 assessment]. "Datnioides undecimradiatus". IUCN Red List of Threatened Species . 2011: e.T180679A174793802. doi: 10.2305/IUCN.UK.2011-1.RLTS.T180679A174793802.en . Retrieved 10 May 2023.
  2. 1 2 3 4 Froese, Rainer; Pauly, Daniel (eds.) (2023). "Datnioides undecimradiatus" in FishBase. June 2023 version.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Datnioides". Catalog of Fishes . California Academy of Sciences . Retrieved 29 October 2023.
  4. ↑ Maurice Kottelat (2000). "The type species of the genus-group names Coius Hamilton, 1822 and Datnia Cuvier, 1829 and the type-genus of the family-group name Datnioididae Bleeker, 1858". Journal of South-east Asian Natural History. 5 (1): 91–94.
  5. ↑ Nelson, J.S.; Grande, T.C.; Wilson, M.V.H. (2016). Fishes of the World (5th ed.). Hoboken, NJ: John Wiley & Sons. pp. 502–506. doi:10.1002/9781119174844. ISBN   978-1-118-34233-6. LCCN   2015037522. OCLC   951899884. OL   25909650M.
  6. ↑ "Series EUPERCARIA (Incertae sedis): Families CALLANTHIIDAE, CENTROGENYIDAE, DINOPERCIDAE, EMMELICHTHYIDAE, MALACANTHIDAE, MONODACTYLIDAE, MORONIDAE, PARASCORPIDIDAE, SCIAENIDAE and SILLAGINIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf. 9 March 2023. Retrieved 30 October 2023.
  7. ↑ Froese, Rainer, and Daniel Pauly, eds. (2023). "Datnioididae" in FishBase . June 2023 version.
  8. ↑ "Datnioides undecimradiatus (ROBERTS & KOTTELAT, 1994) Mekong Tiger Perch". SeriouslyFish. Retrieved 30 October 2023.
  9. ↑ "Mekong Tiger Perch (Datnioides undecimradiatus)". Tropical Fishkeeping. Retrieved 30 October 2023.
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