Polydactylus siamensis Motomura, Iwatsuki & Yoshino, 2001
Largemouth striped threadfin
photo by WWF / Vidthayanon, C.

Family:  Polynemidae (Threadfins)
Max. size:  27.4 cm SL (male/unsexed); 25.2 cm SL (female)
Environment:  demersal
Distribution:  Eastern Indian Ocean: known only from Bangkok, Songkhla and Phuket, Thailand. Probably more widely distributed about the Malay Peninsula.
Diagnosis:  Body with 7 or 8 prominent dark stripes along the scale rows above the lateral line; 7 - 9 faint stripes below (may be lost after preservation). Five pectoral filaments, moderately long, 31-43% of SL with 5th longest. Large upper jaw (mean 17% of SL) (Ref. 39886). Lateral line squamation unbranched, extending to upper end of lower caudal fin lobe. Lower tip of 7th proximal pterygiophore of 1st dorsal fin directed backward (Ref. 40970).
Biology: 
IUCN Red List Status: Not Evaluated (N.E.) Ref. (119314)
Threat to humans:  harmless
Country info:   
 

Entered by: Capuli, Estelita Emily - 18.09.01
Modified by: Reyes, Rodolfo B. - 15.07.13

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