Thryssa dayi Wongratana, 1983
Day's thryssa
photo by FAO

Family:  Engraulidae (Anchovies), subfamily: Coiliinae
Max. size:  21.5 cm SL (male/unsexed)
Environment:  pelagic-neritic; marine; depth range 0 - 50 m
Distribution:  Western Indian Ocean: entire western coast of India north to Pakistan, possibly to Gulf of Oman.
Diagnosis:  Dorsal spines (total): 0-0; Anal spines: 0-0; Anal soft rays: 41-46. Belly with 25 to 27 keeled scutes from isthmus to anus. Tip of snout a little above level of eye center. Maxilla long, reaching to pectoral fin base; first supra-maxilla minute, oval; teeth in jaws enlarged. Tip of first pectoral fin ray elongated into a short filament. Gill arches pinky orange, basibranchials black, inside of gill cover pale yellow or golden.
Biology:  Presumably a schooling and found inshore. More data needed.
IUCN Red List Status: Data deficient (DD); Date assessed: 12 February 2018 Ref. (126983)
Threat to humans:  harmless

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