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 Great Silver Water Beetle (Hydrophilus piceus) is an aquatic freshwater insect in the Hydrophilidae family of scavenger water beetles.
The Great Silver Water Beetle has a black body with an iridescent green or olive sheen. It has protruding eyes and reddish-black antennae. It has six legs and a hard, outer shell called a carapace.
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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 Gunther’s Mouthbrooder (Chromidotilapia guentheri) is a freshwater fish in the cichlid family.
The Gunther’s Mouthbrooder is tan-brown in colour. The female is more colourful than the male. She has a pink belly and a metallic white stripe on her dorsal (back) fin. It has a wide, down-turned mouth.
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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 Jaguar Cichlid (Parachromis managuensis) is a large freshwater fish in the cichlid family. It is also known as the Managuense Cichlid and the Aztac Cichlid.
The Jaguar Cichlid has a yellow-bronze oval body, with vivid black spots. It has a series of large black dots running horizontally along the middle of its body.
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The Yoyo Loach (Botia almorhae) is a tropical freshwater fish in the Botiidae (botid) family of loaches. It is also known as the Almora Loach.
The Yoyo Loach has an elongated body with dark and light patterns, which looks like the letter “y” or the word yoyo. Its tail has thin horizontal greyish stripes. It has short whiskers, called barbels, on its snout (nose). It has a downward-facing mouth.
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The North American River Otter (Lontra canadensis) is a freshwater, semi-aquatic mammal in the Lutrinae sub-family of the Mustelidae family of weasels. It is a mustelid. It is also known as the Northern River Otter or the Common Otter.
The North American River Otter has a long, slender body, which is streamlined for swimming. Its fur is short, thick and water-repellent. It has short legs with webbed feet for swimming, but it can also walk on land. It varies in colour from light-brown to black, with a greyish chest, neck, and throat. It has a short nose, flat head, round ears, and a nose pad (like a dog). It has long whiskers, called vibrissae. It has a long, tapered tail.
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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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The Blood Parrot Cichlid (family Cichlidae) is a freshwater fish in the cichlid family. It is also known as the Parrot Cichlid, due to its beak-like mouth.
The Blood Parrot Cichlid can be bright orange, red, yellow, or grey
It is a hybrid cichlid, which is a combination of breeding two different cichlid species. Its mouth is narrow and vertical, which is considered to be a person-made breeding deformity.
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The Neon Tetra (Paracheirodon innesi) is a small freshwater fish in the Characidae family of tetras.
The Neon Tetra has a flat body with a light-blue back over a silver-white abdomen. It has an iridescent blue horizontal stripe along each side of its body from its nose to its rear fin, and an iridescent red stripe from the middle of its body to its tail fin. The colours become grey or black at night, when it rests. It has blue eyes covered with a blue stripe.
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The Lemon Tetra (Hyphessobrycon pulchripinnis) is a small freshwater fish in the Characidae family of tetras.
The Lemon Tetra has a flat body between an oval-shape and a diamond-shape. It is translucent silvery lemon in colour. Its dorsal (back) fin and anal (bottom) fin have black and yellow margins. It has large eyes, and the upper part of its iris is bright red.
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The Featherfin Squeaker (Synodontis eupterus) is a freshwater fish in the catfish family. It is also known as the Featherfin Synodontis and the Featherfin Catfish.
The Featherfin Squeaker is dark-brown with a high feather-like dorsal (back) fin. It has light, yellowish spotted markings all over its body and fins. It has a sucker mouth and a wide head.
It is called a Squeaker because it communicates with each other in squeaking noises.
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What is the difference between the Oscellate River Stingray (Potamotrygon motoro) and the Thornback Ray (Raja clavata)?
The Oscellate River Stingray is a marine (saltwater) fish, whereas the Thornback Ray is a freshwater river fish.
Both the Oscellate River Stingray and the Thornback Ray have two raised eyes, close together, on the top of their backs.
The Oscellate River Stingray has a beige or brown body with numerous yellow-orange dark-ringed spots, whereas the Thornback Ray varies in colour from light-grey or light-brown with either dark or light blotches.
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The Oscellate River Stingray (Potamotrygon motoro) is a freshwater ray in the Potamotrygonidae family of stingrays. It is also known as the Peacock-Eye Stingray or the Black River Stingray.
The Oscellate River Stingray has a flat, round-shaped, beige or brown body with numerous yellow-orange spots that have dark rings around them. Its underbelly is smooth and white. Its eyes are located on its back and are raised.
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The False Tomato Frog (Dyscophus guineti) is a freshwater amphibian in the Microhylidae family.
The False Tomato Frog is bright red or orange-red with black spots on its throat. Its underbelly is yellowish. The male is not as brightly coloured as the female.
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The Livingston’s Cichlid (Nimbochromis livingstonii) is a freshwater fish in the cichlid family.
The Livingston’s Cichlid is a thin fish with a large mouth. It is usually mottled brown and white. Its dorsal (back) fin often has blue colouring with an orange-red or white line.
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The Smith’s Cichlid (Julidochromis marksmithi) is a tropical freshwater fish in the Cichlidae family of cichlids. It is also known as a Julie Cichlid.
The Smith’s Cichlid has an elongated body with black, white, and yellow horizontal stripes from nose to tail. Its long dorsal (back) fin is white with black markings. Its eyes are black with yellow eye-rings.
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The Siamese Flying Fox (Epalzeorhynchus kallopterus) is a freshwater fish in the Cyprinidae family.
The Siamese Flying Fox has an elongated, cylindrical body with a brownish-black, horizontal band from its eye to its tail. It also has a thinner, golden-coloured line above and below the black line. It has white and black edges on its fins. Its mouth is slightly forward protruding with two pairs of small barbels (whisker-like structures). It has red eyes.
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The Silver Dollar (Metynnis argenteus) is a freshwater tropical fish. It is a serrasalmid from the Characidae family – the serrated salmon family – such as the pacu and piranha.
The Silver Dollar has a round, flat body that is laterally compressed (thin). It is silver all over, with a hint of red in its fins, especially its tail fin, and around its throat. During the breeding season, the male has two large black spots behind its pectoral fins, the red colour deepens, and a black margin (border) appears on his fins.
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