Dussumier'S Thryssa

Belly with 21 to 24 keeled scutes from isthmus to anus. Maxilla very long, reaching at least halfway along pectoral fin and to pelvic fin base in adults; first supra-maxilla absent; lower jaw slender. gill rakers with serrae on the inner edge in distinct clumps. A dark blotch behind upper part of gill opening, sometimes joined to dark saddle on nape.

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: 29 - 37

Inhabits coral reefs (Ref. 58534). Presumably schooling, mostly inshore, perhaps tolerating estuarine conditions. Feeds on diatoms when young (Ref. 189).

Coastal pelagic (Ref. 68964). Presumably schooling, mostly inshore and perhaps tolerating estuarine conditions. Feeds on diatoms when young and prawn larvae, copepods and cypris when larger. The number of museum specimens suggest that it is fairly common (but not in Bombay waters).

fisheries: commercial