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The continental shelf is the extension of
landmass that surrounds nearly all continents. This shelf is relatively shallow (usually
defined as the area from the shore out to a depth of 220 yards or 201 m), compared to the
deep open ocean. The continental shelf contains the greatest amount of marine plants and
animals. The species living in the Continental Shelf Exhibit are representative of the
Pacific Ocean.
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Map angelfish
The Map angelfish (Pomacanthus maculosus) is named for the large yellow "map" of
the Arabian Peninsula that can be seen on either side of its body. Adults range
in color from light to medium blue, with long streamers on the upper and lower fins.
Juveniles are darker in color with white stripes. Map angelfish are omnivores.
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Unicorn fish
Named for the mythical horse-like creature, the Unicorn fish (Naso unicornis) is
easily identified by the bony horn on its forehead, in front of the eyes. There
are usually two blue plates on either side of the tail with spines that are used
for defense. These herbivores, feeding on algae, can reach lengths of 2 feet (.6 m).
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Clown triggerfish
The Clown triggerfish (Balistoides conspicillum) is easily recognized by its color
pattern. The lower half of the black body is covered with large white spots. Yellow
is seen around the mouth and in the speckled dorsal area. This aggressive,
carnivorous fish uses its powerful jaws to crush prey such as mollusks and crustaceans.
They can reach lengths of 2 feet (.6 m). To elude predators, Clown triggerfish can wedge
into holes or under rocks by locking the first dorsal spine in an upright position.
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Banggai cardinalfish
The Banggai cardinalfish (Pterapogon kauderni) can be identified by its black and silver
striped pattern. Indigenous to the Indonesian archipelago, these small fish (2 inches or
5 cm) can camouflage themselves in the spines of sea urchins. The Banggai cardinalfish,
like other members of its family, is a mouth brooder. The male holds the eggs in his
mouth until they hatch. Unlike most mouth brooders, the Banggai cardinalfish keeps the
newly hatched fry in his mouth for up to a month, preventing the young fish from
entering the plankton stream.
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Broomtail wrasses
Broomtail wrasses (Cheilinus lunulatus) are so named because of their fringed
broom-like tails. Feeding on hard-shelled invertebrates, with mollusks being
their favorite, they can reach lengths of 2 feet (.6 m). Like other wrasses,
Broomtails are born as females but can change their sex to male, if needed. Although
shades of blue and green are dominant, coloration varies with gender and age.
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Foxface rabbitfish
The Foxface rabbitfish (Siganus vulpinus) is so called because of the blunt nose
and rabbit-like appearance of the jaws. The zebra-like face patterns disrupt the
clear body lines, allowing it to utilize crevices and light to camouflage itself
in the reef. The unusual pelvic fins have two spines, while the anal fin has
seven spines - more than most other bony fish. Poison glands allow the fins to
inflict a painful sting.
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Desjardini sailfin tangs
Desjardini sailfin tangs (Zebrasoma desjardini) are highly decorated. They are
dark to very light gray/blue, with light freckles on the nose and yellow freckles
on the abdomen. Their face has several vertical stripes, with intricate markings
between each stripe. Desjardini sailfin tangs are known for their large dorsal and
anal fins that can double the fish's size when extended.
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© Copyright 2002, The Dallas World Aquarium, Inc. All Rights Reserved.
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