Heather Angel / Ornamental koi carp (Cyprinus carpio) group with open mouths at lake surface. Xishuangbanna Tropical and Flowers Garden, Jinghong, Yunnan, China.
Diane McAllister / Kokanee salmon (Oncorhynchus nerka) male raising its head above water and gasping as it nears death in Taylor Creek, Lake Tahoe. California, USA, October
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Diane McAllister / Kokanee salmon (oncorhynchus nerka) resting its jaw on a rock momentarily while gasping as it nears death in Taylor Creek, Lake Tahoe. California, USA, October
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Robin Chittenden / Common chub (Squalius cephalus) shoal gasping for air at water's surface in partially frozen ditch, Whitlingham Coiuntry Park, Norfolk, England, UK. December.
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Robin Chittenden / Common chub (Squalius cephalus) shoal gasping for air at water's surface in partially frozen ditch, Whitlingham Coiuntry Park, Norfolk, England, UK. December.
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Shane Gross / Atlantic cod (Gadus morhua) juvenile held by researchers from Department of Fisheries and Oceans Canada after implanting a radio tag to track the fish's movements. Newfoundland, Canada. May 2019.