Lao People's Democratic Republic country information

Common names: Pa sooai, Pa sooai hang luang, Pa souay hang leuang
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Aloun, P., 2006
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments: Known from Mekong basin (Ref. 30857). Found in Ban Hang Khone at Don Khone, 3 km below the fall line of the great waterfalls of the Mekong basin at Lee Pee (Ref. 9497). One of the most important migratory pangasiid species at Ban Hang Khone. Reproduction presumably takes place in or along the Mekong delta. Migratory fish generally have empty stomach. Enters the flooded forest and feeds on mak deua (Ref. 9497). Upstream the Khone Falls, it migrates upstream from May to September, dominated by fish in spawning condition (Ref. 37770). Above the Khone Falls, dowstream migration takes place in October (Ref. 37770). These migrations are triggered by the increase of the water levels above the Khone Falls (Ref. 37770). Also Ref. 37767, 43281.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/la.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Baird, I.G., V. Inthaphaisy, P. Kisouvannalath, B. Phylavanh and B. Mounsouphom, 1999
National Database:

Common names from other countries

Pa souay hang leuang, Trey pra, Kiinanhaimonni, ... more

Classificatie / Names Lokale namen | Synoniemen | Catalog of Fishes(Genus, Soort(en)) | ITIS | CoL | WoRMS | Cloffa

> Siluriformes (Catfishes) > Pangasiidae (Shark catfishes)
Etymology: Pangasius: The Vietnamese name of a fish (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Ecologie

marien; zoet water; brak water benthopelagisch; potamodroom (Ref. 51243). Tropical

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Asia.

Grootte / Gewicht / Leeftijd

Maturity: L_m ? range ? - ? cm
Max length : 120 cm SL mannelijk / geslacht onbekend; (Ref. 30857); max. gepubliceerd gewicht: 14.0 kg (Ref. 9497)

Korte beschrijving Determinatiesleutels | Morfologie | Morfometrie

Dorsale stekels (totaal) : 1; Dorsale zachte stralen (totaal) : 6 - 7; Anale stekels: 4; Anale zachte stralen: 31 - 34. Body depth 4.5-5.0 times in SL (Ref. 43281). Dorsum sky blue; submarginal caudal-fin stripes absent; no humeral spot; vomerine teeth separate at midline, joined to palatine teeth on each side forming long crescentic patches; 18-22 gill rakers in first arch (Ref. 12693). Body dark blackish gray on top and sides, silver gray on abdomen and fins lightly yellow (Ref. 45563).

Facultative air-breathing (Ref. 126274); Migrating but the direction is unknown. Dietary habits have not been studied. Taxonomy of this species may be problematic (Ref. 12693). Unique among pangasiid species in the Mekong in spending a major part of its life in marine coastal waters. Migrates into the Mekong River (but not into any other rivers) in order to breed (Ref. 12369). Regarded to be anadromous (Ref. 12369). It was hypothesized that at least two populations in the Mekong undertake migration (Ref. 37770). One population migrates during May-September from just south of Khone Falls upstream to spawning grounds along the mainstream Mekong all the way to Chiang Khong near the Lao-Thai-Myanmar border. The other population migrates downstream from around Stung Treng to unknown spawning grounds somewhere between Stung Treng and Kompong Cham in Cambodia during the spawning season between May and August. When water level starts to fall in October, the fish moves back to the main river to initiate an upstream dispersal migration, reaching the stretch just below the Khone Falls. Stays in deep pools within the mainstream during the dry season (Ref. 37770). Only two specimens of the fish were collected on April 5, 1956 and September 10, 1957 in Beihai City, Guangxi (Ref. 45563). Another on November 22, 1963 at Shanwei City of Guangdong Province (Ref. 45563).

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Roberts, T.R. and C. Vidthayanon, 1991. Systematic revision of the Asian catfish family Pangasiidae, with biological observations and descriptions of three new species. Proc. Acad. Nat. Sci. Philad. 143:97-144. (Ref. 7432)

Status op de Rode Lijst van het IUCN (Ref. 130435)

Kwetsbaar, zie IUCN Rode Lijst (VU) (A2d); Date assessed: 24 February 2011

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

Harmless

Gebruik door de mens

Visserij: commercieel

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00457 (0.00217 - 0.00962), b=3.09 (2.90 - 3.28), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trofisch niveau (Ref. 69278): 2.0 ±0.00 se; based on food items.

Fishing Vulnerability (Ref. 59153): Very high vulnerability (88 of 100).

Prijsklasse (Ref. 80766): Unknown.

Pangasius krempfi Fang & Chaux, 1949