Each tentacle of an anemone contain special stinging cells called nematocysts that sting on contact. Anemone are home to clownfish, which most people know from the movie ‘Finding Nemo’; these fish have a special mucus layer on them which prevents them from being stung in the same way as we would when we touch them. this mucus layer allows the clownfish to hide amongst the tentacles and avoid other fish preying on them. when a clownfish has settled into its home anemone it rarely travels more than a few feet from it.
Like a lot of the animal species, the female is the largest fish; if the female dies the male becomes the female, a type of sex reversal. then the largest of the remaining anemone fish becomes the male and this is so the adult doesn’t have to leave the anemone looking for a mate.