Guide to the Coastal Resources of Guam: Vol. 1
THE FISHES

Steven S. AMESBURY                   Robert F. MYERS

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

VALUE OF FISH RESOURCES

       The people of Guam have depended upon the sea for subsistence for thousands of years. Subsistence fishing is still important today, and commercial fishing is developing as well.  Many different fishing techniques are used on Guam, some of them having a long tradition of use, others of more recent vintage.

       For harvesting reef fishes, the most productive methods are various forms of net fishing.  Cast net fishing (talaya) requires a great deal of skill as the fisherman carefully approaches a school of fish and throws his net in such a way that the net opens out in the air and falls over the fish school, trapping as many fish as possible.  Many kinds of fish are taken by cast net fishermen on Guam, principally schooling fishes such as rabbitfish (p. 117), atulai (p. 49), mullet (p. 123), goatfish (p. 65), and surgeonfish (p. 111).

       Setting a surround net (chinchulon umesugon) requires several people. These long nets are used to surround large groups of fishes on the reef.  The same fish species that are taken with cast nets are taken with surround nets, but catches are usually much greater.  Tremendous catches of atulai can be taken in surround nets during seasonal runs of these fish.

       Gill nets (tekin) work by entangling fishes in the meshes of the net.  The same fish groups taken by other netting methods are taken with gill nets, but the size of fish caught depends on the mesh size of the net: smaller fish can pass through without becoming entangled and larger fish cannot fit within.the meshes of the net.

       Drag nets (chinchulun mahala) are used in sandy areas of the reefs where the net can be set and then pulled onto the beach without being snagged on rocks or corals.  Several people are required to operate the drag net, and a variety of fish species can be harvested.

       A number of permanent fish weirs are located in various areas around Guam.  The fish weirs are situated so that fishes which are leaving reef flat areas for deeper water as the tide drops will enter the weir and be trapped. Snappers (p. 51), jacks (p. 45), mullets (p. 123), and slipmouths (p. 49) make up the greatest part of the fish weir catch.

       A significant catch of fish is taken by spearfishermen who generally target on fish of a variety of species.  Spearfishermen using underwater flashlights to fish at night catch parrotfish (p. 101) and surgeonfish (p. 111), which sleep in partially exposed areas at night, and squirrelfish (p. 29), which have emerged from their daytime hiding places.

       Hook-and-line fishermen catch large numbers of atulai during seasonal runs. The atulai migrate through channels into inshore areas in the evenings and then back out through these channels in the early morning hours.
During the atulai season, hook-and-line fishermen are lined up shoulder to shoulder along these channels.  At other times of the year hook-and-line fishermen catch snappers (p. 51), groupers (p. 37), jacks ( p. 45), and other carnivorous fishes on the reef margins.

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