Chordata

Illustration of Achilles Tang (Acanthurus Achilles)

Illustration of a Striped Surgeon Fish (Acanthurus Lineatus)

Illustration of a Brown Surgeonfish (Acanthurus Nigrofuscus)

Illustration of Convict Tang (Acanthurus Triostegus)

Illustration of Acipenser oxyrinchus (Atlantic Sturgeon)

Illustration of Acridotheres tristis (Common Myna), which is an invasive pest in South Africa, North America, the Middle East, Australia, New Zealand and many Pacific islands as it out-competes native hollow-nesting bird species

Illustration of Aegolius acadicus (Northern Saw-whet Owl)

Illustration of Agelaius phoeniceus (Red-winged Blackbird)

Illustration of Ailuropoda melanoleuca (Panda)

Illustration of Alces alces (Moose)

Illustration of Aldrichetta forsteri (Yellow-eye Mullet)

Illustration of Alligator mississippiensis (American Alligator)

Illustration of Alosa aestivalis (Blueback Herring)

Illustration of Alosa mediocris (Hickory Shad)

Illustration of Alosa pseudoharengus (Alewife)

Illustration of Alosa sapidissima (American Shad)

Illustration of Ambystoma maculatum (Spotted Salamander)

A side view of a Seaside Sparrow

A side view of a Nelson's Sparrow. Nelson's sparrow and the saltmarsh sparrow were considered to be a single species, the sharp-tailed sparrow; because of this it was briefly known as Nelson's sharp-tailed sparrow

Illustration of Ammodytes dubius (Northern Sand Lance)

Illustration of Amniataba caudavittata (Yellowtail trumpeter)

Illustration of Amphiprion spp. (Clownfish)

Illustration of Anas penelope (Eurasian Wigeon)

Illustration of Anas platyrhynchos (Mallard Duck)

Illustration of Anas rubripes (American Black Duck)

Illustration of Anchoa mitchilli (Bay Anchovy)

Illustration of Anchoa mitchilli (Bay Anchovy) juvenile

Illustration of Anguilla rostrata (American Eel)

Illustration of Anguilla rostrata (American Eel) elver

Illustration of Anguilla rostrata (American Eel) glass eel

Illustration of Anguilla rostrata (American Eel) leptocephalus

Illustration of Anguilla rostrata (American Eel) : silver

Illustration of Anguilla rostrata (American Eel) : yellow

Illustration of Anseranas semipalmata (Magpie Goose)

A waterbird species found in coastal northern Australia. The adult Magpie goose has black and white feathers, a long neck and a cranial knob (smaller in females). They also have orange legs with partly webbed feet, and a red beak with a white hook on the end which assists them in probing for food. The Northern Territory holds the largest populations and breeding areas of the Magpie goose with an estimated population of over 2 million individuals

Side view of male pronghorn

Illustration of Antilope cervicapra (Blackbuck Antelope)

Illustration of Anura (Frog) lifecycle: day 01 egg

Illustration of Anura (Frog) lifecycle: day 03-04 tailbud

Illustration of Anura (Frog) lifecycle: day 06 tadpole with external gills