Chub (Squalius cephalus) shoal at spawning ground with Mallard duck (Anas platyrhynchos) Sava Bohinjka River, Slovenia. June.
Chub (Squalius cephalus) shoal at spawning ground with Mallard duck (Anas platyrhynchos) Sava Bohinjka River, Slovenia. June. Photographed for The Freshwater Project