Here are some examples:
* Ocellaris clownfish: 3-5 inches (8-13 cm)
* Percula clownfish: 3-4 inches (8-10 cm)
* Maroon clownfish: 6-8 inches (15-20 cm)
* Tomato clownfish: 4-5 inches (10-13 cm)
It's important to note that males typically stay smaller than females.