Amphiprion polymnus, also known as the saddleback clownfish or yellowfin anemonefish, is a black and white species of anemonefish with a distinctive saddle. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict sized based dominance hierarchy: the female is largest, the breeding male is second largest, and the male non-breeders get progressively smaller as the hierarchy descends. They exhibit protandry, meaning the breeding male will change to female if the sole breeding female dies, with the largest non-breeder becomes the breeding male. A. polymnus is a small sized fish which grows up to 5.1 in.

The Tomato Clown is a tank raised fish. This makes it much hardier and able to adapt well to aquarium life. It is just over an inch long and eats very well. It enjoys Hikari marine 'S' pellets as well as flake foods. Enjoy adding this great fish to your aquarium.