Solvin Zankl / European eel (Anguilla anguilla) Lake Stechlin, Germany

Oriol Alamany / Three-spined stickleback (Gasterosteus aculeatus), males fighting, Espai Natural Les Gavarres, Baix Emporda, Catalonia, Spain, captive.

Wild Wonders of Europe / Lundgren / Atlantic salmon (Salmo salar) fry, River Orkla, Norway, September 2008

TIM MARTIN / Juvenile Pike (Esox lucius)

Bert Willaert / European chub (Squalius cephalus) with algae, Grundlsee lake, Austria, July.

Paul Hobson / Brook Lamprey (Lampetra planeri) Derbyshire, uk

Michel Roggo / European Graylings (Thymallus thymallus) spawning, male in foreground, Lake of Thoune, Switzerland, 1992

Wild Wonders of Europe / Falklin / Brown trout (Salmo trutta) with mouth wide open feeding on Mayfly (Ephemera Danica) Dala river, Götene, Västra Götaland, Sweden, May 2009

Wild Wonders of Europe / Falklin / Brown trout (Salmo trutta) in shallow water migrating upstream, Bornholm, Denmark, November 2008

Andy Rouse / Brown trout (Salmo trutta) jumping for insects, Scotland, UK..

Linda Pitkin / 2020VISION / Brown Trout (Salmo trutta) in disused quarry,~Jackdaw Quarry, Capernwray, Carnforth, Lancashire, UK, August

Alex Mustard / 2020VISION / A long exposure of the flank of Brown trout (Salmo trutta) Capernwray, Lancashire, UK, August.