Rainbow rock flower
A variant of Rock flower anemone (Phymanthus crucifer)

Representative Rock flower anemonephoto — a dedicated image of this exact morph isn't available yet.
A multi-color rock flower displaying several contrasting hues at once — typically a green or teal disc with red, orange, pink and purple bubbled tentacles, giving a true 'rainbow' spread.
📜 Backstory
'Rainbow' is the catch-all trade grade for wild Phymanthus crucifer that carry three or more distinct colors on a single animal. These are sorted out of mixed wild import lots from Florida and the Caribbean and graded up by anemone-focused sellers. They fetch high prices purely because true multi-color individuals are uncommon in any given collection and cannot be reliably bred to type.
Keeper tips for this variant
Set it in a low rock crevice or sand pocket with moderate PAR and gentle flow so its foot stays put; avoid high-flow areas that keep tentacles permanently retracted.