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Bull trout (Salvelinus confluentus) swimming in the Bighorn Creek, in the Wigwam River drainage in British Columbia. This is one of the last, best places for spawning of the vulnerable (ICUN) and federally-threatened bull trout, and is part of the Kootenay River system, which sees an annual migration of bull trout from Lake Koocanusa, some fifty miles away. The fish prefer very cold water of 40 degrees or so in order to spawn, and the springs in this area provide that. Ram Creek flows into the Wigwam, and between the two of them they support some 5,000 bull trout.

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An African sharptooth catfish (Clarias gariepinus) at Davao Crocodile Park.

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An African sharptooth catfish (Clarias gariepinus) at Davao Crocodile Park.

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An African sharptooth catfish (Clarias gariepinus) at Davao Crocodile Park.

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An African sharptooth catfish (Clarias gariepinus) at Davao Crocodile Park.

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A Catfish (Clarias batrachus) at the University of the Philippines.

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A Catfish (Clarias batrachus) at the University of the Philippines.

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A Catfish (Clarias batrachus) at the University of the Philippines.

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A tank goby (Glossogobius giuris) at the University of the Philippines.

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A tank goby (Glossogobius giuris) at the University of the Philippines.

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A silver perch (Leiopotherapon plumbeus) at the University of the Philippines.

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A silver perch (Leiopotherapon plumbeus) at the University of the Philippines.

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Moon jellyfish (Aurelia aurita) from the Toledo Zoo, Toldeo, Ohio.

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Crossed-fork back golden-line fish (Sinocyclocheilus furcodorsalis) at the Berlin Aquarium.

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African sharptooth catfish (Clarias gariepinus) at Davao Crocodile Park. This species can ‘walk’ considerable distances to get to better water sources when their body of water dries up.

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Critically Endangered Bandula barb (Pethia bandula) at the Plzen Zoo. This is the Photo Ark’s 9,000th species!

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Critically endangered Devils Hole pupfish (Cyprinodon diabolis) at Ash Meadows National Wildlife Refuge.

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Critically endangered Devils Hole pupfish (Cyprinodon diabolis) at Ash Meadows National Wildlife Refuge.

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Critically endangered Devils Hole pupfish (Cyprinodon diabolis) at Ash Meadows National Wildlife Refuge.

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Critically endangered Devils Hole pupfish (Cyprinodon diabolis) at Ash Meadows National Wildlife Refuge.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Ash Meadows Amargosa pupfish (Cyprinodon nevadensis mionectes) at Ash Meadows National Wildlife Refuge near Pahrump, NV.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

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Warm Springs pupfish (Cyprinodon nevadensis pectoralis) at Ash Meadows National Wildlife Refuge near Pahrump, NV. This species is listed as vulnerable on IUCN’s red list.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

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Federally endangered Oasis Valley speckled dace (Rhinichthys osculus nevadensis) at Ash Meadows National Wildlife Refuge in NV.

Photo: Julie Jensen Director of Marketing | WVC O: 866.800.7326 | D: 702.443.9249 | E: j.jensen@wvc.org

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