Epiactis thompsoni, the red-striped anemone, is a species of marine invertebrate in the family Actiniidae, found in New Zealand and South Australia.

[2] Habits rock pools around the low tide mark, adhering to stones and boulders.

[3] Epiactis thompsoni exhibit internal brooding which is when the offspring remain within the gastrovascular cavity.

Internal brooding is beneficial in the harsh intertidal zone and is a means of reducing dispersal.

Some offspring in the broods of Epiactis thompsoni are born with multiple oral disks and tentacular crowns.