Clupeichthys aesarnensis Wongratana, 1983
Thai river sprat
photo by Baird, I.G.

Family:  Ehiravidae (River sprats)
Max. size:  7 cm SL (male/unsexed)
Environment:  pelagic; freshwater, potamodromous
Distribution:  Asia: Mekong Basin in Laos, Thailand and Cambodia.
Diagnosis:  Dorsal spines (total): 0-0; Dorsal soft rays (total): 16-27; Anal spines: 0-0; Anal soft rays: 16-27. Body moderately elongate, belly keeled, with 8 to 10 + 6 to 8 scutes. Snout blunt, pre-maxillae small and toothed, prominent teeth at symphysis and along sides of lower jaw; second supra-maxilla spatulate, about half length of maxilla blade. Pectoral axillary scale less than half length of fin; last two anal fin rays forming a separate finlet. Body is yellowish to gray coloration with silver white transverse-band from gill opening to caudal peduncle (Ref. 85859).
Biology:  Occur in reservoirs and presumably in rivers (Ref. 188). Found in standing waters and large rivers. Feed on planktonic crustaceans. A nocturnal species which can be attracted to bright lights. Found in schools during the spawning season (Ref. 85859). Used to produce prahoc and tuk trey (Ref. 12693).
IUCN Red List Status: Least Concern (LC); Date assessed: 07 July 2017 Ref. (130435)
Threat to humans:  harmless


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