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A large sturgeon floats under water and looks into the chamber
A carnivorous freshwater fish that inhabit clear, vegetated lakes, ponds, swamps, and rivers.
Tench (Tinca tinca), also known as the doctor fish. Wild life animal.
The Arctic grayling (Thymallus arcticus) is a species of freshwater fish in the salmon family Salmonidae. T. arcticus is widespread throughout the Arctic and Pacific drainages in Canada, Alaska, and Siberia, as well as the upper Missouri River drainage in Montana.  Wyoming.
Sturgeon fish swims in an aquarium.
sturgeoniat
Close shot of beluga sturgeon fish in the aquarium.
Swimming slowly, a large white sturgeon and salmon cruise the water in the Bonneville Fish Hatchery and Sturgeon Center along Oregon’s Columbia River.
Pirarucu (Arapaima gigas) - Amazon River Basin fish
Red tailed catfish
Freshwater bream fish isolated on natural underwater background
Abstract small fish and reflections in the water.
beautiful photo of auranti channa fish
Curious eurasian otter (Lutra lutra) looking up in a stream.
These fish inhabit the waters of North America. Elongated body and long, dotted with rare and very sharp teeth mouth. It is found in freshwater ponds and reaches enormous size (2.5 - 3 meters) and weight over 100 kg.
Arapaima gigasfish in aquarium of Tri Nguyen island, Nha Trang city, Khanh Hoa province, central Vietnam
High fin whiptail catfish Rineloricaria lanceolata freshwater aquarium fish
Dash-and-dot goatfish Parupeneus barberinus occurs in the tropical Indo-Pacific from the Gulf of Aden and Oman, south on the east coast of Africa to Mossel Bay, South Africa, east to the islands of Micronesia, Line Islands, Marquesas Islands, and Tuamotu Archipelago, and from southern Japan to Australia and New Caledonia in a depth range from 0 to 100m, max. length 60cm, common length 30cm. \n\nIt is one of the most abundant species of Parupeneus. Adults, solitary or in small groups inhabit large sand patches as well as sand and rubble areas of reef flats, and lagoon and seaward reefs. \n\nThis specimen was encountered at night in its nocturnal coloration, when black and red being essentially invisible colors. \n\nTriton Bay, Indonesia, \n3°54'2.455 S 134°6'23.699 Eat 4m depth by night
Jundiara Catfish (Pseudoplatystoma sp x Leiarius marmoratus) - Hybrid Freshwater Fish
Underwater large arapaima
Yellow Spotted gar fish lies on sandy bottom.
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Beluga Huso huso is a fish of the sturgeon family swimming in clear water
Swimming grass snake (Natrix natrix), sometimes called the ringed snake or water snake,
Spined loach (Cobitis taenia) is a freshwater fish in Europe. It is also known as spotted freshwater loach. It is found in oxygen rich water of rivers, brooks and still water.
Transparent Waters of Plitvice Lakes National Park
A Japanese lamprey eel - yatsume unagi or eight-eyed eel, grabs onto bedrock with its mouth
a redfish seen just below the surface as it's being reeled in
Spotted gar (Lepisosteus oculatus). Freshwater fish.
Pacific herring swimming in the aquarium
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