GLOSSOGOBIUS GIURIS PDF

Sagir Ahmed Bangladesh J. The age and growth of this species, collected from the river Titas, Brahmanbaria, were studied with transverse sections of otoliths. The growth of this species was rapid during the first two years, reaching The maximum age recorded was five years with

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Cite this page as: Martin F. Body elongate, compressed, height 6 in length. Head 2. Head and snout flattened. Snout broadly pointed, longer than eye, tip before lower half of eye. Eye in SL, interorbital subequal or less than eye diameter. Mouth relatively large, slightly oblique, lower jaw prominent, maxillary reaching at least to below front half of eye; outer row of teeth in upper jaw conical, somewhat enlarged, stout, followed by rows of smaller, depressible teeth; teeth in outer row on lower jaw conical, somewhat enlarged, stout, followed by rows of smaller, depressible teeth; tongue deeply emarginate; sensory papillae on cheek below eye in multiple rows; indistinct mandibular frenum on chin.

Lower end of gill-opening behind lower tip of cleithrum; gill-membrane attached to isthmus. Scales ctenoid on body, cycloid on breast and pectoral fin base, opercle with patch of cycloid scales dorsally; predorsal scaled up to behind eyes, scales ctenoid on side of nape; predorsal scales ; lateral line absent; longitudinal series ; horizontal scale rows.

Two dorsal fins, first not as high as body, second spine longest; second dorsal and anal fin lower than body. Caudal fin oblong, about as long as head, rounded. Pelvic fins fully united into disc. Pectoral and ventral fin a little shorter than head. Size To around 14 cm SL Colour No blackish spots on back; middle of 5 large brown blotches on lateral midline narrower than half body depth at this position.

Characteristic small dark spot or two on outer face of anteriormost first dorsal fin spine. Anal and pelvic fins plain. Caudal fin mottled with rows of dark spots. Feeding Feeds mainly on aquatic macroinvertebrates, especially insect larvae and nymphs; macrocrustaceans and small fish are also consumed in small quantities.

Biology Oviparous, benthic spawners that migrate to the sea to breed but may also breed in fresh water. Relatively fecund, producing between 1, and 16, eggs. Eggs are small 1. Larvae have a marine phase and mature rapidly.

Edinburgh : Archibald Constable pp. Gangetic River region, India.

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