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Iguana
Most adult Green iguanas (Iguana iguana)
reach lengths between 4-7 feet (1.2-2.1 m). Their coloration
ranges from dull gray to bright green. They are found over
a large area from Mexico to Southern Brazil and Paraguay,
as well as in the Caribbean. They are omnivores and the majority
of their diet is plants and fruits. Green iguanas are threatened
by habitat destruction and the pet industry.
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Silver arowana
The Silver arowana (Osteoglossum bicirrhosum)
is silvery in color with red, blue and green highlights
that develop with age. They can grow to 4 feet (1.2 m) in
length but generally range from 2½-3 feet (.8-.9 m).
The male and female are hard to distinguish but the anal fin
of the male is larger. They are carnivores, eating almost
anything that will fit into their mouths. They can leap up
to 3 feet (.9 m) into the air to catch insects. The Silver
arowana is found in the Amazon River flood plains and is not
endangered.
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Ornate horned frog
The Ornate horned frog (Ceratophrys ornata)
is a round, plump amphibian that grows up to 6 inches (15
cm) in length. The females are slightly larger than males.
Their mouth appears to extend around the entire body, giving
them the nickname "Pac-man" frogs. They are native
to South America, where they burrow in leafy, muddy vegetation
of tropical forest floors. Ornate horned frogs eat insects,
lizards, mice and other frogs.
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Mata mata
The Mata mata (Chelus fimbriatus) is
a terrapin that lives exclusively in brackish water. It is
the only member of its genus. Mata mata turtles have a brownish-black
carapace, which is oblong in shape and usually covered with
algae. They have a light-colored neck and a yellow lower shell.
Their feet are webbed like freshwater turtles. The Mata mata
can hold its breath for long periods of time as it lies in
wait. A narrow snout, along with their coloration, allows
this carnivore to ambush its prey.
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Amazon yellow-spotted river
turtle
Yellow-spotted Amazon River turtles (Podocnemis
unifilis) have a shell length of 27 inches (68 cm) in
females and 14 inches (35 cm) in males. The carapace is brown
to greenish-gray with a narrow yellow border that darkens
to olive gray with age. One barbel is present on the chin
in the Orinoco population and two in the Amazon population.
The Yellow-spotted Amazon river turtle is found in lakes,
ponds, floodplains and lagoons along the Orinoco and Amazon
Rivers.
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Freshwater stingray
Freshwater stingrays (Potamotrygon spp.)
live in the shallows of South American rivers. They
spend most of the day resting along the bottom. Their body
is a large, round disk marked with circular lines or spots.
The slender tail is armed with a serrated, stinging spine
that produces venom that is absorbed into the victim's wound.
The body of an average adult freshwater stingray is 12 inches
(30.5 cm) in length with a tail that can reach 8 inches (20.3
cm).
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Electric eel
The Electric eel (Electrophorus electricus)
is actually a fish that can reach 9 feet (2.7 m) in length
and weigh more than 50 pounds (23 kg). The electricity comes
from nerve ending cells in the tail that can produce from
600-1,000 volts at one time (enough to stun a human or a large
animal such as a horse). Electric eels have 200-250 "electric"
cells per centimeter. They breathe air, coming to the surface
to gulp air, which is absorbed by its body. They are native
to South American rivers.
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© Copyright 2002, The Dallas World Aquarium, Inc. All Rights Reserved.
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