What a great find to see a pair of pink anemonefish (Amphiprion perideraion) nestled within the tentacles of their host anemone. This pinkish-orange species have symbiotic relationships with sea anemones as do all anemonefishes, and are immune to the stinging tentacles. The sea anemone protects the fish from predators with its tentacles, and may also provide scraps of left-over food. In return the anemonefish protects its host from predators, and also gets rid of bothersome parasites.
It’s interesting that the pink anemonefish can change their sex if necessary. If the sole breeding female of the area dies, then the largest breeding male will change to female. The next largest nonbreeding fish will now change to male creating a new dominant breeding pair.