pectoral

Trout swimming Salmo trutta seen from above on a sandy river bottom, demonstrating carangiform movement

Sandbar shark Carcharhinus plumbeus

Sandtiger shark Carcharias Taurus

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

Zebra shark Stegostoma fasciatum

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

Eel Anguilla anguilla swimming with weed and background

Elasmobranch (Rays, Dogfish, skates and Sharks) egg case variety

Electroreception in the Hammerhead Sphyrnidae shark diagram with inset of ampullae of Lorensini and hidden prey

European bullhead Cottus gobio with background

Fish anatomy diagram simplified exterior and interior cross section view

Fish scales used to age a fish with zoom in annuli of fish scales

Fishing net pingers shown on nets in the sea deterring dolphins (but not fish)

Atlantic stingray Dasyatis sabina view from above and from below