fresh water

Caddis fly Trichoptera larvae in pebble case underwater on sandy substrate

Dragonfly nymph Anisoptera from above dorsal view cut to white

Water dock Rumex hydrolapathum pencil drawing

Watercress Nasturtium officinale with flower and seeds and edible leaves

Hemlock Water dropwort Oenanthe crocata with details of the roots, of an individual leaf, and of one flower and one fruit

Iris seed pods, one open and the other not yet open

Bogbean Menyanthes trifoliata emerging from the water with its fringed pale pink flowers and trifoliate leaves

Bog pondweed Potamogeton polygonifolius with fruiting spike emergent above the water, floating leaves and more lanceolate leaves underwater

Rudd Scardinius erythropthalmus

Samon Salmo salar with watery background

Samon Salmo salar hen fish showing silvery irridescence

Samon Salmo salar hen, cock, parr, and smolt stages with text

Samon Salmo salar parr with distinctive markings and red dots

Samon Salmo salar smolt showing silvery young fish

Siamese fighting fish Betta splendens battling

Three-spined stickleback Gasterosteus aculeatus male

Three-spined stickleback Gasterosteus aculeatus male with background weed

Common carp Cyprinus carpio

Common roach Rutilus rutilus

Eel Anguilla anguilla swimming with weed and background

European bullhead Cottus gobio with background

Grayling Thymallus thymallus

Northern pike Esox lucius lurking with background of weeds

Brown trout Salmo trutta from chalk stream (with red spots)