Orange Tube Anemone

Orange Tube Anemone (Cerianthus sp.). It is a semi-aggressive species that is reef-safe with caution, admired for its brilliant orange coloration, long flowing tentacles, and unique tube-dwelling behavior.

Males typically cannot be distinguished from females visually (no clear sexual dimorphism is present in Cerianthus species), while females/juveniles appear identical and are usually only differentiated through breeding studies.

They reach about 8–12 inches across when fully extended and should be housed in aquariums of at least 30 gallons (larger preferred due to long tentacles and stinging reach).

Provide a deep sandbed (4+ inches) or fine substrate for burrowing their protective tube, moderate open space, and minimal rock contact (they do not attach to rock like true anemones). Maintain stable water parameters: salinity 1.020–1.025, temp 72–79°F, pH 8.1–8.4, and ensure low–moderate flow with a secure lid since their tentacles can extend widely and sting nearby tank mates.

Diet should consist of meaty foods such as mysis shrimp, brine shrimp, finely chopped seafood, and other planktonic items (target feeding recommended, as they are non-photosynthetic and rely on regular feedings).

With proper care, this anemone makes a stunning centerpiece for the aquarium, best kept in a species-only or carefully planned reef system.

International Aquatics Quarantine & Guarantee: All fish are checked by marine vets, given a formalin bath, and held for 14 days in copper-treated systems. We feed Selcon-soaked food with Kanaplex and Metroplex during quarantine. Unless marked, all livestock comes with our 15-Day Guarantee. You will receive a video of your fish eating before shipment. On request, we also send photos/videos after arrival at IA. Some species are import-to-order (3-10 business days). Many common species are already cleared or near the end of QT.

Several species will be import-to-order and may take anywhere from 3-10 business days to secure. Once your fish is secured, you will be notified, and the quarantine process will then begin.