Environment: milieu / climate zone / depth range / distribution range
Sinh thái học
; Nước ngọt Sống nổi và đáy; pH range: 6.5 - 7.0; dH range: 5 - 8; di cư trong nước ngọt (Ref. 51243); Mức độ sâu 5 - ? m (Ref. 27732). Tropical; 22°C - 26°C (Ref. 2059); 20°N - 3°N
Asia: Mekong and Chao Phraya basins, Malay Peninsula, Sumatra, Java and Borneo (Ref. 27732). Reported from Salween and Maeklong basins (Ref. 26336); China (Ref. 9671); and lower Myanmar (Ref. 4832).
Length at first maturity / Bộ gần gũi / Khối lượng (Trọng lượng) / Age
Maturity: Lm 19.2, range 18 - 20.235 cm
Max length : 32.0 cm SL con đực/không giới tính; (Ref. 7050); common length : 20.0 cm SL con đực/không giới tính; (Ref. 2686)
Các vây lưng mềm (tổng cộng) : 17 - 19; Tia mềm vây hậu môn: 8. Distinguished from the other species of the genus in having 12-18 branched dorsal rays; 6-9 rows of spots along scale rows (not always distinct), and a large round blotch on the caudal peduncle (Ref. 27732). No black midlateral stripe; sometimes with a spot above a pectoral fin (Ref. 12693).
Adults occur in all type of habitats, but usually associated with large streams with slow current and muddy to sandy substrate (Ref. 27732). They migrate from river to flooded areas during the onset of the flood season and returns to river habitats at the end of that period (Ref. 37770). Juveniles are usually seen first in August, they move back to permanent water as flooded lands dry up. Back in the rivers they are attached to brush piles, tree roots and other solid objects (Ref. 12693). Adults feed on roots of plants (Hydrilla verticillata), unicellular algae and some crustaceans. Most abundant fish in Nam Ngum reservoir where it is captured with large dip nets set on rafts. Good flesh but bony and used for lap pa or grilled (Ref. 6459). Marketed fresh or used to make prahoc (Ref. 12693).
Tan, H.H. and M. Kottelat, 2009. The fishes of Batang Hari drainage, Sumatra, with descriptions of six new species. Ichthyol. Explor. Freshwat. 20(1):13-69. (Ref. 81211)
IUCN Red List Status (Ref. 130435)
Threat to humans
Harmless
Human uses
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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=0.01072 (0.00762 - 0.01507), b=3.04 (2.99 - 3.09), in cm total length, based on LWR estimates for this species (Ref.
93245).
Mức dinh dưỡng (Ref.
69278): 2.6 ±0.0 se; based on diet studies.
Generation time: 3.4 ( na - na) years. Estimated as median ln(3)/K based on 1
growth studies.
Thích nghi nhanh (Ref.
120179): Chiêù cao, thời gian nhân đôi của chủng quần tối thiểu là dưới 15 tháng (K=0.32-1.15; Fec=30,000-300,000).
Fishing Vulnerability (Ref.
59153): Low to moderate vulnerability (34 of 100).
Nutrients (Ref.
124155): Calcium = 558 [160, 1,378] mg/100g; Iron = 1.4 [0.6, 3.9] mg/100g; Protein = 17.9 [16.4, 19.4] %; Omega3 = 0.365 [0.163, 0.878] g/100g; Selenium = 42.4 [18.7, 89.8] μg/100g; VitaminA = 53.5 [22.4, 127.9] μg/100g; Zinc = 1.94 [1.11, 4.18] mg/100g (wet weight); based on
nutrient studies.
