Taxonomy

Kingdom : Animalia
Phylum : Chordata
Class : Actinopterygii
Order : Perciformes
Genus : Gerres
Species : filamentosus
Author : Cuvier, 1829

Description

Size: Maximum 35 cm; common about 15 cm
Color: Silvery and there may be 7-10 broken vertical bars on the upper portion along the sides. The fins are dusky hyaline to white
The body is oblong, moderately compressed and deep. The mouth is small and protractile and bears fine, villiform teeth in each jaw. The body is covered with firmly attached ctenoid scales. Head 2.9-3.2 in standard length, 3.8-4.3 in total length. Depth of body 2.3-2.5 in standard length, 3.1-3.5 in total length. Eye diameter 3.3-3.8 in head, 1.0-1.2 in snout and also in interorbital space. Maxillary reaching to below front border of eye. Lower pharyngeals united by mobile suture. Distance from tip of snout to dorsal fin origin a little more than height of body. Second dorsal fin spine often produced into a filament in large specimens. 2nd and 3rd anal fin spines subequal. Pectoral fin a little longer than length of head. Ventral fin shorter than head without snout.
Number of spines and rays in the dorsal fin: IX, 10; number of spines and rays in the anal fin: III, 7; number of rays in the pectoral fin: 15-16; number of spines and rays in the ventral fin: I, 5; number of scale rows along the lateral line: 43-47; number of horizontal scale rows usually counted from origin of the dorsal fin to the lateral line and from anal origin to the lateral line: 5-6+1+12-13.
Dioecious, external fertilization, batch spawner, nonguarders, open water/substratum egg scatterers. Breeds in late summer to early rainy season. Juveniles enter estuaries and mangrove areas at 1 cm SL and stay until they reach maturity, at which stage they move out to sea.