Juan Manuel Borrero / Illustration of threatened species of Spain : Blue whale (Balenoptera musculus), Brown bear (Ursus arctos), Spanish ibex (Capra pyrenaica hispanica), Bullhead (Cottus gobio), Iberian Rock Lizard (Lace...
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Steve Nicholls / European bullhead fish (Cottus gobio) UK
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Michel Roggo / Bullhead (Cottus gobio) Europe
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Michel Roggo / Gudgeon (Gobio gobio) Europe
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Simon Colmer / Bullhead (Cottus gobio) from chalk stream, Sussex, England, UK. Captive
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Jane Burton / Bullhead {Cottus gobio} male guarding mass of eggs, captive, Europe
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Jane Burton / Bullhead {Cottus gobio} male guarding mass of eggs, captive, Europe
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Jane Burton / Female Bullhead {Cottus gobio} camouflaged while resting on river bed, captive, Europe
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Jane Burton / Mass of newly hatched fry and eggs of Bullhead {Cottus gobio} captive, Europe
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Adrian Davies / Gudgeon {Gobio gobio} in stream, UK
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Paul Hobson / Gudgeon {Gobio gobio} Yorkshire, UK
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Juan Manuel Borrero / Gudgeon (Gobio gobio) Delta del Ebro NP, Catalonia, Spain
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Willem Kolvoort / Bullhead (Cottus gobio) Holland
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Willem Kolvoort / Bullhead portrait (Cottus gobio) in sand winning pit, Holland
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Willem Kolvoort / Bullhead (Cottus gobio) Holland
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Willem Kolvoort / Bullhead (Cottus gobio) Holland
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Paul Hobson / Bullhead (Cottus gobio) in stream. England, UK, Europe
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Paul Hobson / Stoneloach {Nemacheilus barbatula} + Bullhead {Cottus gobio} UK
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Juergen Freund / Close-up of Bullhead fish, Pacific coast Canada
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Paul Hobson / Bullhead adult {Cottus gobio} Yorkshire UK
