Philippe Clement / Female Common kingfisher (Alcedo atthis) diving and catching a Nine-spined stickleback (Pungitius pungitius) fish, stuns and eats it, Belgium, June.
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Alex Mustard / 2020VISION / Male fifteen spined stickleback (Spinachia spinachia) guarding its nest (not visible), Shetland Islands, Scotland, UK, June
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Jane Burton / Ten-spined stickleback {Pungitius pungitius} male guarding his nest, captive, from Europe
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Warwick Sloss / Three spined stickleback in aquarium
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Warwick Sloss / European kingfisher (Alcedo atthis), adult male, perching on stick with three-spined stickleback (Gasterosteus aculeatus) fish, Somerset, UK, May.
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Warwick Sloss / European kingfisher (Alcedo atthis), adult male, perching on stick with three-spined stickleback (Gasterosteus aculeatus) fish, Somerset, UK, May.
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Oscar Dewhurst / Little grebe (Tachybaptus ruficollis) with stickleback (Gasterosteus). London, England, UK. March.
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Chris Shields / Illustration of Fifteen-spined stickleback (Spinachia spinachia)
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Remi Masson / Three-spined stickleback (Gasterosteus aculeatus) male building its nest. River Rhone, France
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Remi Masson / Common frog (Rana temporaria) and Three-spined stickleback (Gasterosteus aculeatus) in a river. Alps, river Rhone, France
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) among stonewort in pond, the Netherlands, July.
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) in pond, the Netherlands, July.
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) in pond, the Netherlands. July.
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) in pond, the Netherlands, July.
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) with a cyclops in a aquarium, the Netherlands. February.
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) in pond, the Netherlands. July.
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) in a ditch, the Netherlands, November.
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Willem Kolvoort / Ten-spined stickleback (Pungitius pungitius) in a ditch, the Netherlands, November.
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Steve Downer / Close-up of a male Three spined stickleback (Gasterosteus aculeatus) fanning water over eggs in nest, May. Captive.
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Steve Downer / Close-up of a male Three spined stickleback (Gasterosteus aculeatus) fanning water over eggs in nest, May. Captive.
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Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) tending to nest, April. Captive.
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Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) nudging female into nest to encourage egg laying, female exits and male enters nest to fertilise eggs, April. Captive.
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Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) constructing nest, April. Captive.
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Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) constructing nest, April. Captive.
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Steve Downer / Male Three spined stickleback (Gasterosteus aculeatus) constructing nest, April. Captive.
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Steve Downer / Pair of Common european toads (Bufo bufo) in amplexus, laying eggs, with European common frog (Rana temporaria) tadpoles and Three spined stickleback (Gasterosteus aculeatus) in shot, Birmingham, Engl...
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MYN / Paul van Hoof / Three-spined stickleback (Gasterosteus aculeatus) two adults with 'leiurus form'. The Netherlands, October, Meetyourneighbours.net project
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MYN / Paul van Hoof / Three-spined stickleback (Gasterosteus aculeatus) adult with 'leiurus form'. The Netherlands, October, Meetyourneighbours.net project
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MYN / Paul van Hoof / Three-spined stickleback (Gasterosteus aculeatus) adult with 'leiurus form'. The Netherlands, October, Meetyourneighbours.net project
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Gary K. Smith / Little egret, (Egretta garzetta), catching Three-spined stickleback (Gasterosteus aculeatus) in tidal estuary, Norfolk, UK. December.
Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male with female laying eggs in the nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male building his nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male with female laying eggs in the nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male with female laying eggs in the nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus) male with female laying eggs in the nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male and female laying eggs in the nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male building his nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), males, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male building his nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), male building his nest, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
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Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), males fighting, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.
