Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...
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Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...
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Nick Upton / European eel (Anguilla anguilla) elvers swimming in a large holding tank at UK Glass Eels, ahead of being reintroduced to a lake in Wales, Gloucester, UK, October 2016
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Nick Upton / European eel (Anguilla anguilla) elvers swimming in a large holding tank at UK Glass Eels, ahead of being reintroduced to a lake in Wales, Gloucester, UK, October 2016
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Nick Upton / European eel (Anguilla anguilla) elvers being collected in a sieve for packaging and transport to Wales for a reintroduction project as a holding tank is drained down at UK Glass Eels, Gloucester, UK,...
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Philippe Clement / Visitors looking at tropical fishes in huge aquarium at Oceanopolis - ocean discovery park - at Brest, Normandy, France, September 2015
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Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...
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Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...
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Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...
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Nick Upton / Young European eel (Anguilla anguilla) elvers, or glass eels, caught during their annual migration up rivers from the Bristol channel, swimming in a large holding tank at UK Glass Eels, which supplies...
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Pascal Kobeh / Researcher in tank with Black tip reef Sharks (Carcharhinus melanopterus) where he tags them before releasing them. Vabbinfaru Island. North Male Atoll, Maldives. Indian Ocean.
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Simon Colmer / Tanks used for breeding Malawi cichlid (Pseudocrenilabrinae) fish, Senga Bay, Malawi. November 2012
