icthyes

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

Grayling Thymallus thymallus

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

Northern pike Esox lucius lurking with background of weeds