PERCULA CLOWNFISH (Amphiprion percula). Made into a household name with the film Finding Nemo, these fish are colorful, playful, and quick to adapt to aquarium life. They’re even more interesting when they live with a host anemone, whose stinging tentacles provide a protective home (clownfish are immune to the jolt). Many clownfish species are now mass produced in hatcheries.
Photo by John Brandt