TABLE OF CONTENTS
BIOLOGY AND BEHAVIOR
VALUE OF FISH RESOURCES
CONSERVATION AND MANAGEMENT
DANGEROUS MARINE FISHES
HOW TO USE THIS BOOK
Abudefduf sexfasciatus (Lacepède)
(Scissor-tailed Sergeant Major; Fomho)
SL: to 13 cm (photo: 8 cm SL, Apra Harbor, 18 m)
This moderately common damselfish is found in moats, channels,
lagoons, and seaward reefs in coral-rich areas to depths of 12 m.
It usually occurs in small groups and feeds on zooplankton
and algae. The black streaks on the tail fin distinguish it
from three other vertically striped species of Abudefduf
on Guam. The larger (15 cm) A. sordidus
and A. septemfasciatus are
drab shades of gray. The latter species has seven vertical
bands (the band on the head is not always distinct) and a dark margin
on the rear of the tail fin. Both species feed on algae and
are often seen in inshore channels in silty water near rocky shorelines
exposed to mild surge. The yellow-and-black striped A.
waigiensis may occasionally be observed
on outer moats and reef fronts to a depth of 3 m.
INDO-PACIFIC: E. Africa to Rapa and the Tuamotus, n. to s. Japan,
s. to Lord Howe.