Biology:Congriscus megastomus

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Short description: Species of eel

Congriscus megastomus
FMIB 41110 Congrellus megastomus (Gunther).jpeg
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Anguilliformes
Family: Congridae
Genus: Congriscus
Species:
C. megastomus
Binomial name
Congriscus megastomus
(Günther, 1877)
Synonyms[3]

Congromuraena megastoma Günther, 1877
Thalassenchelys coheni Castle & Raju, 1975 [2]

Congriscus megastomus is an eel in the family Congridae (conger/garden eels).[4] It was described by Albert Günther in 1877, originally under the genus Congromuraena.[5] It is a marine, temperate-water dwelling eel which is known from Japan and the Kyushu–Palau Ridge, in the northwestern Pacific Ocean. It inhabits reefs. Males can reach a maximum total length of 40 centimeters.[4] This species' remarkably large and distinct leptocephalus larvae were previously known under the name Thalassenchelys coheni. In 2016, scientists used genetic techniques to link the larvae to the adult C. megastomus.[6] These larvae reach a maximum size of 30 cm (12 in) and have a number of unusual characteristics, including two forward-facing front teeth that may be used for feeding on different prey than other eel larvae.[7]

Congriscus megastomus is preyed on by Chlorophthalmus albatrossis.[8] Its own diet includes finfish such as Diaphus coeruleus, Diaphus sagamiensis, Hymenocephalus lethonemus, Synagrops japonicus, and species of Macrura, as well as euphausiid plankton crustaceans and polychaetes.[9]

References

  1. Tighe, K.; McCosker, J.; Smith D.R. (2019). "Congriscus megastomus". IUCN Red List of Threatened Species 2019: e.T199035A2552239. doi:10.2305/IUCN.UK.2019-1.RLTS.T199035A2552239.en. https://www.iucnredlist.org/species/199035/2552239. Retrieved 11 February 2022. 
  2. Kurogi, H., Chow, S., Yanagimoto, T., Konishi, K., Nakamichi, R., Sakai, K., Ohkawa, T., Saruwatari, T., Takahashi, M., Ueno, Y. & Mochioka, N. (2015): Adult form of a giant anguilliform leptocephalus Thalassenchelys coheni Castle and Raju 1975 is Congriscus megastomus (Günther 1877). Ichthyological Research, 63 (2): 239-246.
  3. Synonyms of Congriscus megastomus at www.fishbase.org.
  4. 4.0 4.1 Congriscus megastomus at www.fishbase.org.
  5. Günther, A., 1877 (1 Nov.) [ref. 2009] Preliminary notes on new fishes collected in Japan during the expedition of H. M. S. Challenger.. Annals and Magazine of Natural History (Series 4) v. 20 (no. 119) (art. 56): 433-446.
  6. Kurogi, Hiroaki; Chow, Seinen; Yanagimoto, Takashi; Konishi, Kooichi; Nakamichi, Reiichiro; Sakai, Kyohei; Ohkawa, Toshiyuki; Saruwatari, Toshiro et al. (2015-10-16). "Adult form of a giant anguilliform leptocephalus Thalassenchelys coheni Castle and Raju 1975 is Congriscus megastomus (Günther 1877)". Ichthyological Research 63 (2): 239–246. doi:10.1007/s10228-015-0492-5. ISSN 1341-8998. 
  7. Miller, Michael (2009-10-31). "Ecology of Anguilliform Leptocephali: Remarkable Transparent Fish Larvae of the Ocean Surface Layer". Aqua-BioScience Monographs 2 (4). doi:10.5047/absm.2009.00204.0001. https://www.researchgate.net/publication/250395431. 
  8. Predators of Congriscus megastomus at www.fishbase.org.
  9. Food items reported for Congriscus megastomus at www.fishbase.org.

Wikidata ☰ Q2678568 entry