Speckled madtom
Spiny candelabrum
Splash-backed poison frog
Splitfin flashlightfish
Spotfin shiner
Spotted cactus pleco
Spotted feather catfish
Spotted garden eel
Spotted leporinus
Spotted platyfish
Spotted rafael catfish
Spotted ratfish
Spotted sharpnose puffer
Spotted tang
Spotted unicorn tang
Spotted wobbegong shark