Elasmobranchii (sharks and rays) >
Myliobatiformes (Stingrays) >
Dasyatidae (Stingrays) > Urogymninae
Etymology: Himantura: Greek, iman, imantos = thong, strap + Greek, oura = tail (Ref. 45335).
Eponymy: Dr Armand-Alfred-Antoine Krempf (d: 1879) was a French marine biologist, who first went to Vietnam (1903) as part of a scientific expedition to Hanoi. [...] (Ref. 128868), visit book page.
More on author: Chabanaud.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; brackish; demersal. Tropical
Asia: Chao Phraya (Thailand) and Mekong basins.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm WD male/unsexed; (Ref. 12693)
Plain ventral surface; reticulate pattern on dorsal surface; spiral valve with 11-14 turns.
Inhabits estuaries and large rivers, often far upstream. Usually found over sandy substrates where it feeds on benthic invertebrates (Ref. 12693). Ovoviviparous (Ref. 50449).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Exhibit ovoviparity (aplacental viviparity), with embryos feeding initially on yolk, then receiving additional nourishment from the mother by indirect absorption of uterine fluid enriched with mucus, fat or protein through specialised structures (Ref. 50449). Distinct pairing with embrace (Ref. 205).
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)
Human uses
Fisheries: minor commercial; aquarium: commercial
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00486 - 0.02155), b=3.06 (2.87 - 3.25), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Trophic level (Ref.
69278): 3.5 ±0.37 se; based on food items.
Resilience (Ref.
120179): Very Low, minimum population doubling time more than 14 years (Assuming Fec<10).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).