scales

Fly agaric Amanita muscaria fungus with stem, soil on the stipe base, and scales on the scarlet cap

Common knapweed Centaurea nigra flowers

Grass snake Natrix natrix

Grass snake Natrix natrix on pile of dead autumn leaves

Grass snake Natrix natrix

Monitor lizard Varanus species pen and ink

Sand lizard Lacerta agilis

Common lizard Lacerta vivipara

Long tailed pangolin Phataginus tetradactyla pen and ink illustration showing the pangolin’s long claws, long tail, and overlapping scales

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

Seahorse family diagram showing pipefish, leafy seadragon, and other syngnathidae

Siamese fighting fish Betta splendens battling

Stone fish Synanceia verrucosa camoflauged with its background

Striped bass Morone saxatilis

Three-spined stickleback Gasterosteus aculeatus male

Three-spined stickleback Gasterosteus aculeatus male with background weed

Grayling Thymallus thymallus

Northern pike Esox lucius lurking with background of weeds

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