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Aaptosyax grypus

Superregnum : Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Otomorpha
Subcohors: Ostariophysi
Sectio: Otophysa
Ordo: Cypriniformes
Superfamilia: Cyprinoidea

Familia: Cyprinidae
Subfamilia: Cyprininae
Tribus: Cyprinini
Genus: Aaptosyax
Species: Aaptosyax grypus

Aaptosyax grypus (Rainboth, 1991)

Type locality: Mekong River at Khong Chiam District, Ubon Ratchathani Province, Thailand.

Holotype: CAS 76031 (not received by 1996)

Paratypes: UMMZ 209086 (5), 214881-85 (1, 2, 1, 2, 1).

Aptosyax grypus Rainboth, 1991 [incorrect original spelling]


W. J. Rainboth, 1991: Aaptosyax grypus, a new genus and species of large piscivorous cyprinids from the middle Mekong River. Japanese Journal of Ichthyology v. 38 (no. 3): 231–237.


Aaptosyax grypus in Catalog of Fishes, Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds.) 2021. Catalog of Fishes electronic version.
Aaptosyax grypus in FishBase,
Froese, R. & Pauly, D. (eds.) 2021. FishBase. World Wide Web electronic publication,, version 02/2021.
Aaptosyax grypus (Rainboth, 1991) – Taxon details on Integrated Taxonomic Information System (ITIS).
IUCN: Aaptosyax grypus (Data Deficient)
Aaptosyax grypus – Taxon details on National Center for Biotechnology Information (NCBI).

Vernacular names
English: Giant Salmon Carp
ไทย: ปลาสะนากยักษ์, ปลาสะนากปากบิด, ปลาสะนากปากเบี้ยว

The giant salmon carp[2] (Aaptosyax grypus), also termed the Mekong giant salmon carp,[1] is a species of freshwater fish in the family Cyprinidae and the single species in the monotypic genus Aaptosyax.[3] It is endemic to the middle reaches of the Mekong River in northern Cambodia, Laos and Thailand. Its population is much reduced (>90%) as a result of overfishing and habitat degradation, and it is now considered Critically Endangered.[1]

This fish can reach a length of 130 centimetres (51 in) and weight of 30 kilograms (66 lb).[2]

Vidthayanon, C (2013). "Aaptosyax grypus". IUCN Red List of Threatened Species. 2013. Retrieved 27 December 2014.
"Aaptosyax grypus Rainboth, 1991". FishBase. 2011. Retrieved 16 April 2012.
"Genus Aaptosyax Rainboth 1991". FishWisePro. 1990. Retrieved 16 April 2020.

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