fish

Northern pike Esox lucius lurking with background of weeds

Brown trout Salmo trutta view from above showing swimming motion with background of weeds and pebbles

Nurse shark Ginglymostoma cirratum

Common bream Abramis brama

Common carp Cyprinus carpio

Common roach Rutilus rutilus

Comparison of the teeth of different shark species including megalodon, great white, sandtiger, brown, cow, nurse, zebra, and sharpnose shark

Landscape of a reed bed with a cross section of the water in the forground and showing fish and amphibians living in the water, along with a close up of some microscopic aquatic invertebrates; in the sky hobby hunt for dragonfly and damselfly and swallows fly; otter, bittern, and water vole hide in the margins […]

Smew Mergellus albellus pen and ink illustration of the bird swimming on water

Red throated Diver Gavia stellata looking alert with red throat on show, showing striped head and sharp beak

Kingfisher Alcedo atthis sketch of bird in flight

Dipper eating aquatic invertebrate

Goosander or Common merganser Mergus merganser on a lake with sundew, rocks and a beach in the foreground, scrubby vegetation behind, set in northern Wales uplands.

Grey heron Ardea cinerea quick sketch, standing on one leg in a river

Grey heron Ardea cinerea wading ankle deep in a river with reeds behind

Common kingfisher Alcedo atthis with minnow in its beak, perched on a branch