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.
Some species such as the False Percula are very peaceful and tolerant, while others such as Gold Stripe Maroon Clownfish (Premnas biaculeatus) normally will not tolerate conspecifics (unless paired). Species that grow large, such as Clarkii, Gold Stripe Maroon and Tomato Clownfish, should be housed in larger tanks, and have tank-mates at least their size or larger.