Amphiprion is the clownfish genus, comprising about 28 wild species and the parent of 200+ designer cultivar lineages. The hobby has captive-bred A. ocellaris, A. percula, A. clarkii, A. frenatus (tomato), A. melanopus (cinnamon), A. ephippium (saddleback), and A. polymnus among others. Captive-bred clownfish dominate the trade for good reason: they're hardier, parasite-free, and accept prepared food immediately.
The genus is famous for its symbiosis with host anemones (Entacmaea, Heteractis, Stichodactyla) but most captive-bred clownfish never see an anemone in their lifetime and host alternative items - powerheads, corals, or just a corner of the tank.