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By Bob Goemans
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Novaculichthys

Novaculichthys taeniourus

(Lacepede, 1801)

Rockmover Wrasse, Dragon Wrasse

Not Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Indo-West Pacific Ocean: Red Sea to South Africa, north to the Hawaiian Islands and Southern Japan, south to Lord Howe Island. Also in the Eastern Pacific Ocean: Gulf of California to Panama and the Galapagos Islands.

Size: 12 inches (30 cm)

Natural Environment: Inhabits reef flats, lagoons, and seaward reefs that have sand and rubble bottoms and are experiencing good water movement, and usually found at depths between 10 – 85 feet (3 – 25 m) where it feeds on benthic invertebrates.

General Husbandry: Occasionally seen in the trade, with adults dark brown with a white line on each scale and a pale white face with radiating dark lines from the eyes. Juveniles can be brown or green with white blotches.

Best maintained in fish-only aquariums having a fine substrate (0.5 – 2 mm) of at least 4 inches (10 cm) in depth for sleeping in at night or hiding in when frightened. It also should contain large quantities of live rock/rubble to search for prey, e.g., small crustaceans/tiny snails/copepods/zooplankton.

Those in this genus will rearrange bottom dwelling corals and rocks/rubble in its search for tasty bottom dwelling invertebrates, as it will eat snails, tubeworms, sea stars, cucumbers, urchins, crabs, and shrimp, and also quickly burrow into the sand if frightened or for sleeping at night. This diving into the sand bed will cause clouds of sand particles to be dispensed into the water, and would cause various corals harm, therefore, those in this genus are not recommended for reef aquariums.

As to diet, requires a meaty diet consisting of finely chopped clam, mussel, fish, and shrimp flesh, and/or other meaty type marine frozen foods and fed two to three times per day.

If appearing to not be getting sufficient food, try some live foods, such as black worms (Lumbriculus variegatus) or adult fortified brine shrimp.

Taxonomy:

    Order: Perciformes

    Suborder: Labroidei

    Family: Labridae

    Genus: Novaculichthys

FYI: Upon first entering the aquarium may stay buried for days. Simply await its decision when to emerge. Once established, it will go to sleep under the sand and arise the next morning at almost the exact same time every day!

One per aquarium, and become quite aggressive.

Can jump out of uncovered aquariums.

Experience Level: Intermediate

Temperament: Semi-aggressive

Diet: Carnivore

Coral Safe: Yes

Fish Safe: Yes

Invertebrate Safe: With caution

Acclimation Time: 30 minutes+

Aquarium Environment: Fish-only aquarium

Tankmates: Larger, active and moderately aggressive

Minimum Tank Size: 150 gallons

Temperature Range: 74 - 82°F (23 – 27°C)

Specific Gravity: 1.020 - 1.026

pH: 8.0 - 8.5

 Novaculichthys taeniourus (Rockmover Wrasse, Dragon Wrasse)
Photo © David Cook & Robert Patzner
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