Teleostei (teleosts) >
Siluriformes (Catfishes) >
Siluridae (Sheatfishes)
Etymology: Pterocryptis: Greek, pteron = wing, fin + Greek, kryptos = hidden (Ref. 45335).
More on author: Valenciennes.
Environment: milieu / climate zone / depth range / distribution range
Ecology
Freshwater; demersal. Tropical
Asia: Nam Xam basin in Laos, Viet Nam, southeastern China (Ref. 43281) and Thailand (Ref. 9417).
Size / Weight / Age
Maturity: Lm ? range ? - ? cm
Max length : 40.1 cm TL male/unsexed; (Ref. 111347); common length : 16.4 cm SL male/unsexed; (Ref. 35840); max. published weight: 430.00 g (Ref. 111347)
Dorsal soft rays (total): 4; Anal soft rays: 57 - 73; Vertebrae: 53 - 58. Unusually large genital papilla; males with a long conical papilla, while females with a flat, leaf-shaped papilla with a small projection at the tip. A unique combination of the following characters: head width 11.6-15.4% SL, head depth 8.2-9.9% SL, pelvic fin length 7.5-9.6% SL, length of dorsal fin base 0.8-1.9% SL, depth of caudal peduncle 6.2-7.6% SL, and principal caudal fin rays 14-16 (Ref. 41525). Dark brown body; dorsal surface purple; stomach light gray; all fins are light gray (Ref. 40516). Eye circular (Ref. 43281).
Body shape (shape guide): elongated.
Adults inhabit streams. They feed actively at night on small fish, crustaceans and insects.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Kottelat, M., 2001. Fishes of Laos. WHT Publications Ltd., Colombo 5, Sri Lanka. 198 p. (Ref. 43281)
IUCN Red List Status (Ref. 130435: Version 2025-1)
Threat to humans
Harmless
Human uses
Fisheries: commercial
Tools
Special reports
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Internet sources
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=0.00589 (0.00354 - 0.00981), b=3.00 (2.85 - 3.15), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trophic level (Ref.
69278): 3.8 ±0.59 se; based on food items.
Resilience (Ref.
120179): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (30 of 100).
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