The Black Spot Piranha (Pygocentrus cariba) is an omnivorous freshwater fish in the Serrasalmidae family of serrated fish. It is a serrasalmid.
The Black Spot Piranha is silvery-grey with black markings and yellowish gills. It has a small mouth with a single row of sharp, serrated, triangular, interlocking teeth. Its bite power is very strong. It has an oval-shaped body with a flattened face and large forehead.
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What is the difference between the Brazilian or Lowland Tapir (Tapirus terrestris) and the Malayan Tapir (Tapirus indicus)?
The Brazilian Tapir and the Malayan Tapir are both ungulate (hoofed) mammals in the Tapiridae family of tapirs and bush cows. They are related to the horse and the rhinoceros.
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The Red Hook Silver Dollar (Myloplus rubripinnis) is a medium-sized freshwater fish in the Serrasalmidae family of silver dollars. It is also called the Redhook Myleus.
The Red Hook Silver Dollar is rounded in shape and laterally compressed. It has a grey body with yellow flecks.
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The Freshwater Angelfish (Pterophyllum scalare) is a freshwater fish in the Cichlidae family. It is the most common Angelfish. It is a cichlid.
The Freshwater Angelfish has a thin, laterally compressed triangular-shaped body. It is silver with three brownish-red vertical stripes on its body and red markings on its fins. It has elongated, trailing fins. It has reddish-brown eyes.
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The Southern Screamer (Chauna torquata) is a large bird in the Anseriformes family of geese. It is also known as the Crested Screamer. It is called Screamer because it screams loudly.
The adult Southern Screamer has grey feathers with a black collar around its neck. Its back is dark-grey and its underbelly is light grey. It has a grey crest and a grey beak. It has a red patch around its eyes. It has pink legs. It has partially webbed feet that enable it to swim. It is a good swimmer, but it prefers to be on land most of the time.
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The Warty Glowspot Cockroach (Lucihormetica verrucosa) is an insect in the Blaberidae family of giant cockroaches.
The Warty Glowspot Cockroach is mainly black or dark-brown with a white margin on its body. The male has a pair of large, yellow spots on its pronotum (front part of its body). Both the male and female have short wings.
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The Amazon Tree Boa (Corallus hortulanus) is a reptile in the Boidae family of non-venomous, colubrid, boa constrictor snakes. It is a boid (pronounced bo-id). It is also known as the Garden Tree Boa or the Macabrel.
The Amazon Tree Boa is long and slim. It varies in base colour from black, brown, grey, red, and orange to yellow. Its patterns can be banded, speckled, rhomboid shapes, or completely plain with no patterns or markings. It has a distinct head and it has dark, rounded eyes. It has sharp, long, needle-like teeth.
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The Banded Leporinus (Leporinus fasciatus) is a freshwater ray-finned fish in the Anostomidae family of characid fish with toothed jaws and an adipose fin (second dorsal fin).
The Banded Leporinus has an elongated body with an upturned mouth. It is cream-coloured with 8-12 thick, black, vertical stripes on its body. It has a reddish patch underneath its mouth, and sometimes on its head and tail.
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The Monk Parakeet (Myiopsitta monachus) is the only parrot that builds a stick nest in a tree. Other parrots use a hollow in a tree trunk for their nest.
The female Monk Parakeet lays 4-8 eggs, which hatch after about 24 days. The newly-hatched chicks are born altricial – featherless, blind, and helpless.
Monk Parakeet chicks open their eyes after about four days. They take time to gain all of their feathers. Initially, the down feathers make young chicks look fluffy with dirty-white feathers, and a few green feathers. The chicks have a large orange beak.
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The Red-Legged Seriema (Cariama cristata) is a medium-sized bird. It is also called the Crested Cariama.
Paired Red-Legged Seriema make a nest together on the ground, or in a bush. The photographed Seriema are making a nest on a ledge. The nest is messy, large, and made of twigs, lined with leaves and feathers.
The female Red-Legged Seriema lays 2 eggs, which hatch after 25-30 days.
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The Buenos Aires Tetra (Hyphessobrycon anisitsi) is a freshwater fish.
The Buenos Aires Tetra is metallic silver with red-tipped fins and a black marking on its tail fin. The top and bottom of its body are red. Its pelvic and bottom fins are red. At the base of its body where it meets the tail is a black t-shaped mark.
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The Electric Eel (Electrophorus electricus) is a freshwater fish. It is not an eel. It is a Gymnotiforme in the knifefish family. It is relatd to the Catfish.
The Electric Eel is an ostarophysan fish because its bladder has two chambers which keeps it buoyant (afloat). It is an air-breather, and must come to the surface to breathe.
The Electric Eeel has a long, cylindrical, snake-like dark-grey to brownish body. Its underbelly is yellow or orange. It has a fin that runs along its underbelly. It does not have scales like fish. Its mouth is square-shaped.
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The Barred Catfish (Pseudoplatystoma fasciatum) is a large freshwater fish in the Pimelodidae family of long-whiskered catfish. It is also called the Barred Sorubim. It is related to the Tiger Shovelnose Catfish.
The Barred Catfish is dark-grey with black loop-like stripes and spots. Its head is depressed with a wide mouth and long whiskers, called barbels. Its eyes and teeth are small.
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What is the difference between the Southern Crested Caracara (Caracara planacus) and the Striated Caracara (Phalcoboenus australis)?
The Southern Crested Caracara and the Striated Caracara are both large birds of prey in the Falconidae family. They are falconids.
The Southern Crested Caracara has a dark-brownish cap, belly, wings, and tail tip, with a whitish-buff throat and nape, whereas the Striated Caracara is black-brown with a grey-flecked neck.
The Southern Crested Caracara has a brown crest and the Striated Caracara does not have a crest.
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The Southern Crested Caracara (Caracara planacus) is a large bird of prey and a raptor in the Falconidae family of falcons. It is a falconid.
The Southern Crested Caracara has dark-brownish cap, belly, wings, and tail tip. Its throat and the back of its neck are whitish-buff, with dark-brownish bars on its chest, neck, back, and tail. It has large brown eyes with a reddish-orange eye-ring. Its cere is reddish-orange and its beak is beige and hooked. Its legs are yellow.
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The Common Wild Turkey (Meleagris gallopavo) is a large bird in the Phasianidae family of pheasants, partridges, francolins, junglefowl, and grouse. It is a galliforme.
The Common Wild Turkey has black feathers with brown-black and white tail feathers with a roundish body. Its feathers have a brown and green iridescent sheen. It has pale feet with spurs. It has brown eyes. It has wings and can fly for a short distance.
It has fleshy red nodes or bumps on its head, which are called caruncles. The male turkey has fleshy red skin that hangs from it head, the top of its pale beak, and under its neck. The fleshy part on its forehead that hangs over its beak is called a snood. The fleshy part under its chin is called a wattle or dewlap.
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The Brazilian Guinea Pig (Cavia aperea) is a medium-sized rodent mammal.
The Brazilian Guinea Pig is usually dark olive-brown with brown and black fur. Its underbelly is pale grey or yellowish-grey. It can also be various colours, such as tan-brown and white. It has large ears and whiskers on its nose. It has brown eyes. It has a tail, but it is so small that it is difficult to see.
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The Orange-Winged Amazon Parrot (Amazona amazonica) is a medium-sized bird.
The Orange-Winged Amazon Parrot is mainly green. It has blue and yellow feathers on its head, and orange feathers in its wings and tail. Its upper jaw is light-grey and dark-grey. The male and female look alike.
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The Red-Footed Tortoise (Chelonoidis carbonarius) is a medium-sized land chelonian reptile.
The Red-Footed Tortoise has a dark-coloured, oval-shaped, high-domed shell, called a carapace. The carapace has a lighter patch in the middle of each scute (scale). The undershell, called the plastron, is pale. It has pale-yellow to dark-red scales on its head and neck, whith males having more coloured scales. It has a small head with large black eyes. Its upper jaw is slightly hooked, and it has 15-20 teeth. It has stumpy, thick, short legs with four claws on its front legs and five claws on its back legs.
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What is the difference between the Jaguar (Panthera onca) and the Leopard (Panthera pardus)?
The Jaguar and the Leopard are both carnivorous wild cats.
The Jaguar and the Leopard have dark rosette-shaped markings on their cream to yellowish-brown fur.
The Jaguar has larger and fewer rosettes than the Leopard. The rosettes of the Jaguar are mostly without a gold centre.
The Jaguar is stockier and more muscular than the Leopard.
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