Scientific Name
Gerres oblongus
Common Name
Slender silver-biddy
Biology
Dorsal
spines
(total): 9;
Dorsal
soft rays
(total): 10;
Anal
spines: 3;
Anal
soft rays: 7. Scales between 5th dorsal fin spine base and lateral line , 4-4.5. Upper jaw extending almost to the level of anterior margin of dermal eye opening. Second dorsal fin spine longest, 19-26% fo SL (mean 23%). Caudal fin dusky (rarely with dark distal margin); lower edge of lower caudal fin hyaline. Dusky stripes absent or very indistinct along scale rows above lateral line (sometimes 4-9 slightly oblique dusky bands in specimens less than about 10 cm SL); 4-9 slightly oblique dusky bands or columns of ovoid dark spots (rarely brownish) immediately below lateral line, but more obvious in preserved or stressed live specimens (Ref. 41108).