DEDICATION

ACKNOWLEDGEMENTS

TABLE OF CONTENTS

INTRODUCTION

ZOOGEOGRAPHY

ECOLOGY

BIOLOGY AND BEHAVIOR

VALUE OF FISH RESOURCES

CONSERVATION AND MANAGEMENT

DANGEROUS MARINE FISHES

HOW TO USE THIS BOOK

BIBLIOGRAPHY

SPECIES INDEX

CHAMORRO NAMES

CARANGIDAE (JACKS)

       Jacks are fast-swimming carnivores that roam the open waters above the reef or swim in the upper levels of the open sea.  Most species are silvery and laterally compressed.  The slender caudal peduncle is reinforced with a series of bony scutes that cover the lateral line.  This feature, in addition to the absence of two or more sets of dorsal and ventral finlets and the presence of two stout spines in front of the anal fin, serves to distinguish jacks from the sometimes superficially similar tunas (family Scombridae).  At least 18 species are known from Guam.  Large individuals of Caranx and Seriola (Amberjacks) are occasionally ciguatoxic.

Carangoides orthogrammus (Jordan & Gilbert)
Caranx lugubris Poey
Caranx melampygus (Cuvier)
Caranx sexfasciatus Quoy & Gaimard
Caranx ignobilis (Forsskål)
Gnathanodon speciosus (Forsskål)
Elagatis bipinnulata (Quoy & Gaimard)
Selar crumenophthalmus (Bloch)