Swelling of the lower leg and ankle is a common problem. Determining the cause of ankle swelling is the first step to finding effective treatment. Once the cause of the ankle swelling is determined, effective treatment can be initiated.
The most common clown fish-and the one that looks most like Nemo-is the percula clown fish which is bright orange with white stripes.
The coloration and patterning of the clown triggerfish helps confuse predators-from below, the white spots look like the water surface above the fish while from above, the fish blends in with the coral environment. These fish use their dorsal and anal fins to swim, more so than their tails or caudal fins.