Thryssa stenosoma Wongratana 1983

Belly with 15 to 17 + 10 to 12 = 26 to 28 keeled scutes from isthmus to anus. Tip of snout at about level of eye center or just a little higher. Maxilla long, reaching to pectoral fin base or slightly beyond; first supra-maxilla minute, oval; teeth in lower jaw slightly enlarged. No dark blotch behind upper part of gill opening; a pair of dark lines along back.

Amphidromous. Refers to fishes that regularly migrate between freshwater and the sea (in both directions), but not for the purpose of breeding, as in anadromous and catadromous species. Sub-division of diadromous. Migrations should be cyclical and predictable and cover more than 100 km.Characteristic elements in amphidromy are: reproduction in fresh water, passage to sea by newly hatched larvae, a period of feeding and growing at sea usually a few months long, return to fresh water of well-grown juveniles, a further period of feeding and growing in fresh water, followed by reproduction there (Ref. 82692).

Dorsal spines (total): 0; Analspines: 0; Analsoft rays: 40 - 45

An estuarine species, but presumably also found inshore. More data needed.

fisheries: of no interest