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Cypriniformes (Carps) >
Cyprinidae (Minnows or carps) > Cyprininae
Etymology: Aaptosyax: Greek, aaptos =giant, terrible + Greek, ykis, yaina, yanis, syaina, syax and syakon = a kind of sole; but it is also related to yaina =hyena and wild pig; grypus: Named for its strongly curved jaws (Ref. 34719).
Environment: milieu / climate zone / rango de profundidad / distribution range
Ecología
; agua dulce pelágico; potamodromo (Ref. 51243). Tropical (Ref. 71989)
Asia: Mekong River.
Tamaño / Peso / Age
Madurez: Lm ? range ? - ? cm
Max length : 130 cm SL macho / no sexado; (Ref. 9497); peso máximo publicado: 30.0 kg (Ref. 9497)
Short description
Claves de identificación | Morfología | Morfometría
Well-developed adipose eye-lid, covering most of eye except pupil in large adults, less extensive in juveniles; presence of a large symphyseal knob in lower jaw fitting in a median notch in upper jaw (Ref. 43281).
Body shape (shape guide): fusiform / normal.
Inhabits mainstreams of middle reaches in deep rocky rapids. Juveniles occur in tributaries (Ref. 58784). A large fast-swimming predator, feeding on fish of the middle and the upper water levels. Although most common along the Thai-Lao border at the mouth of the Mun River, its numbers have drastically decreased in recent years. This is perhaps due to dam construction or excessive gill netting, to which active pursuit predators, like this species, are particularly vulnerable (Ref. 12693). Undertakes upstream migration at the same time as Probarbus sp. in December-February (Ref. 37770) which may be related to spawning activity (Ref. 9497). Attains over 30 kg (Ref. 9497).
Life cycle and mating behavior
Madurez | Reproducción | Puesta | Huevos | Fecundidad | Larva
Roberts, T.R. and T.J. Warren, 1994. Observations of fishes and fisheries in southern Laos and northeastern Cambodia, October 1993-Febuary 1994. Nat. Hist. Bull. Siam. Soc. 42:87-115. (Ref. 10431)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Pesquerías: pesquerías de subsistencia
Herramientas
Special reports
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Fuentes de Internet
Estimates based on models
Phylogenetic diversity index (Referencia
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00521 - 0.02417), b=3.02 (2.85 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nivel trófico (Referencia
69278): 4.5 ±0.80 se; based on food items.
Resiliencia (Referencia
120179): Muy bajo, población duplicada en un tiempo mínimo superior a 14 años (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
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