By Bob Goemans
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Family Clavelinidae

Nephtheis fascicularis

(Drasche, 1882)

Pom-Pom Tunicate, Lollipop Tunicate

Likely Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Indo-West Pacific Ocean

Natural Environment: Inhabits protected areas receiving gentle water movement and usually seen on reef drop-offs and under overhangs.

General Husbandry: Occasionally seen in the trade.

These creatures require numerous feedings per day of live and/or preserved commercial phytoplankton/zooplankton products or that of animal and plant powders that produce suspended products in the bulk water.

Proper placement is also quite important. Generally, most prefer low light and do better with indirect light and gentle water movement.

Besides being difficult to maintain, they have a very short life span, usually about one year and sometimes far less.

Only those willing to provide for their demanding level of care should attempt keeping them in closed systems.


    Kingdom: Animalia

    Phylum: Chordata

    Class: Ascidiacea

    Order: Aplousobranchia

    Family: Clavelinidae

    Genus: Nephtheis

FYI: Color depends upon its area of origin.

    Experience Level: Expert

    Diet: Plankton feeder

    Temperament: Peaceful

    Aquarium Environment: Reef or fish-only aquarium

    Coral Safe: Yes

    Fish Safe: Yes

    Invertebrate Safe: Yes

    Acclimation Time: 30 minutes+

    Aquarium Hardiness: Moderate

    Calcium (Ca): 380 - 430 mg/l

    Alkalinity: 2.5 - 3.0 meq/l

    Phosphate (PO4): <0.05 mg/l

    Magnesium (Mg): approx. 1350 mg/l (relate to specific gravity)

    Strontium (Sr) 8 - 10 mg/l

    Temperature Range: 72 - 83°F (23 - 28°C)

    Minimum Tank Size: 30 gallons

    Lighting: PAR 150

    Water Movement: WM 1

    Specific Gravity: 1.023 - 1.025

    pH: 8.0 - 8.4

    Iodine/Trace Elements Monitor/as necessary to maintain quality seawater.

 Nephtheis fascicularis (Pom-Pom Tunicate, Lollipop Tunicate)
Photo © Bob Goemans
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San Francisco Bay Brand