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Low oxygen conditions in the lake caused the fish to die.
A young Asian man is enjoying feeding koi fishes during weekend outing at petting zoo in Malaysia.
Pirarucu (Arapaima gigas) - Amazon River Basin fish
The small fish in the fish tank are eating feed
Carp and golden carp, a lot of fish in the water. Koi
Two koi fish in a lily pond
Raising Weatherfish Becoming
Underwater large arapaima
Blackspotted rockfish, is a rockfish of the Pacific coast, Seward, Alaska
Guppy Multi Colored Fish in a Tropical Acquarium
Tropical fish swimming in the aquarium
large two Arapaima fish in the Amazon under water
Koi and other fish swim in a shallow fresh water pond near water lilies.
Arapaima Sudis gigas, also known as the pirarucu. Wildlife animal
Transparent Waters of Plitvice Lakes National Park
Arowana young fish beautiful fish tail, swimming lonely  in the pond
Pink salmon or humpback salmon (Oncorhynchus gorbuscha) is a species of anadromous fish in the salmon family. It is the smallest and most abundant of the Pacific salmon. Pink salmon run.  Prince William Sound; Alaska; Chugach National Forest;  Nellie Juan-College Fiord Wilderness Study Area; .Pacific Ocean; Gulf of Alaska.
Golden trout fishes in water tank in a fish farm. Trout fish farming in Pakistan.
A barracuda is a large, predatory, ray-finned fish known for its fearsome appearance and ferocious behaviour. The barracuda is a saltwater fish of the genus Sphyraena, the only genus in the family Sphyraenidae which was named by Constantine Samuel Rafinesque in 1815. It is found in tropical and subtropical oceans worldwide ranging from the eastern border of the Atlantic Ocean to the Red Sea, on its western border the Caribbean Sea, and in tropical areas of the Pacific Ocean.
Various river fish swim in a large aquarium in the oceanarium.
The Longfin eel is an important food resource for the MÄori. The special place of the eel is maintained in MÄori culture through the stories contained in tribal histories. Because the Maori relied on seasonal food the Eel was seen as a gift form the gods and eels often appear beside tribal ancestors on Maori carvings.
Colorful exotic fish swimming in deep blue water aquarium with green tropical plants.
Hand drawn brown trout fish isolated on white background.
A young fly fisherman casting to a Chinook salmon in the tail of a pool on a Great Lakes tributary river.  The salmon is visible in the center bottom of the frame in front of the rock.
Arapaima gigas, one of the largest fish living in the Amazon
Gourami fish are kept in aquariums
A city park and Japanese stroll garden located in Phoenix, Arizona
Meagre (Argyrosomus regius), also known the Atlantic shadefish.
Abstract small fish and reflections in the water.
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