Facultative air-breathing ; Found in lakes and rivers . Adults occur in estuaries and lower reaches but has also been observed in the upper reaches during the rainy season. Species is omnivorous with a tendency to opportunism .
Dorsal spines (total): 2; Dorsal soft rays (total): 6 - 8; Anal spines: 0; Anal soft rays: 33 - 43. Body somewhat elongated with short predorsal length (25.2-29.2% SL); a long caudal peduncle (17.2-21.8% SL); short head length (16.1-20.1% SL); and, short mandibular barbels (length 11.7-42.2% HL). Swim bladder 3-chambered, extending to above anal-fin base . Dorsum dark blue to blue-black; 3-4 lowermost principal caudal rays white; vomerine teeth appearing as 2 joined patches in juveniles ; vomerine teeth united into quadrangular patch, 1.5 times broader than long, not confluent with palatine teeth patch; anal fin base elongate, its length 3.1-3.6 times in SL; dorsal and pectoral fin spines slender; snout blunt .: elongated; Cross section: circular.
Behavioural data for Pangasius Polyuranodon is currently being reviewed.
Freshwater; brackish; benthopelagic; potamodromous . Tropical
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