Environment: milieu / climate zone / depth range / distribution range
Οικολογία
; Γλυκού νερού βενθοπελαγικό; ποταμόδρομος (Ref. 51243). Tropical
Asia: Maeklong (Ref. 26336), Mekong and Chao Phraya basins (Ref. 12693).
Μέγεθος / Βάρος / Age
Maturity: Lm ? range ? - ? cm
Max length : 300 cm TL αρσενικό/απροσδιόριστο; (Ref. 30857); μεγ. δημοσιευμένο βάρος: 300.0 kg (Ref. 10431)
Short description
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 0. Head very large, about 2.5 times in SL; no barbels; no dorsal spine; 90-110 long gill rakers on first gill arch (Ref. 43281).
Found in large rivers and seasonally in canals and floodplains (Ref. 12693). Adults prefer big pools in the Mekong at least part of the year while juveniles are mostly seen in swamps and small tributaries, from where they are sometimes collected and stocked in ponds (Ref. 37770). The young can acclimatize to live in ponds, canals and swamps. A migratory species (Ref. 37772). Enters flooded forest (Ref. 9497). Young individuals occur in October in the lower Mekong basin (Ref. 12975). Feeds on algae, phytoplankton and fruits of inundated terrestrial plants (Ref. 12693) and detritus (Ref. 58784). Its numbers have declined seriously. Individual fishes rarely survive to reach reproductive maturity. Its catch should be strictly regulated by size. A very desirable food fish, sometimes eaten fresh or pickled (Ref. 12693). Maximum length of 300 cm needs confirmation. Threatened due to over harvesting and habitat loss (Ref. 58490).
Life cycle and mating behavior
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Rainboth, W.J., 1996. Fishes of the Cambodian Mekong. FAO species identification field guide for fishery purposes. FAO, Rome, 265 p. (Ref. 12693)
IUCN Red List Status (Ref. 130435: Version 2024-1)
Threat to humans
Harmless
Human uses
αλιεία: Εμπορικό(ά); Υδατοκαλλιέργειες: Εμπορικό(ά)
Εργαλεία
Special reports
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Διαδικτυακές πηγές
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Τροφικό Επίπεδο (Ref.
69278): 2.9 ±0.44 se; based on food items.
Ελαστικότητα (Ref.
120179): Χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού 4,5 - 14 έτη (Assuming tm=5-10).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).
