Fish

Red sea coral reef scene showing clown fish, sea urchins, star puffer fish, brain coral, squirrel fish, sea anenome, and lettuce coral

Samon Salmo salar hen fish showing silvery irridescence

Three-spined stickleback Gasterosteus aculeatus male with background weed

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

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

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

Eel Anguilla anguilla swimming with weed and background

European Rockpool diagram showing lots of shoreline crustaceans, bivalves, anenomes, and gastropods, sea weeds, and background

Northern pike Esox lucius lurking with background of weeds

Electric eel Electrophorus electricus; complete animal and longditudinal cross section showing the three electric organs; namely Sach’s, Hunter’s and Main organ. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Electric eel Electrophorus electricus; complete animal and longditudinal cross section showing the three electric organs; namely Sach’s, Hunter’s and Main organ. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Reef Manta ray Manta alfredi showing two animals swimming with mouths open, filter-feeding. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Arapaima with scales Arapaima gigas Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Arapaima gigas fish showiung its distinctive scales and “etched” head Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Great White shark Carcharodon carcharias showing denticles and skin, and the Sharklet anti-bacterial material that is has inspired. Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books)

Atlantic cod Gadus morhua with curved tail Illustration from “30 Animals that made us smarter” by Patrick Ayree (BBC Books).

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

Zebra shark Stegostoma fasciatum

Samon Salmo salar parr with distinctive markings and red dots

Three-spined stickleback Gasterosteus aculeatus male

Striped bass Morone saxatilis

Stone fish Synanceia verrucosa camoflauged with its background

Siamese fighting fish Betta splendens battling

Sandtiger shark Carcharias Taurus