Saltcorner
By Bob Goemans
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Halichoeres

Halichoeres argus

(Bloch & Schneider, 1801)

Argus Wrasse

Not Reef Tank Suitable

Likely Fish-Only Tank Suitable

Range: Indo-West Pacific Ocean: Sri Lanka, Taiwan, and south to northern Australia.

Size: 5 inches (12 cm)

Natural Environment: Inhabits shallow coastal reefs and seagrass beds and usually found at depths between 3 – 50 feet (1– 15 m) where it feeds on smaller fishes and crustaceans.

General Husbandry: Occasionally seen in the trade with males having mottled green body with irregular orange lines on the face and somewhat extending onto the body, and the female an overall darkish green.

Best maintained in fish-only aquariums having a fine sand bed, (0.5 – 2.0 mm) and at least 4 inches deep, along with several rocky crevices to hunt and also open swimming areas. Those in this genus will not only rearrange bottom dwelling corals in its search for tasty bottom dwelling invertebrates, as it will eat smaller fishes by first bashing them against hard objects, then consuming the pieces, and also snails, tubeworms, sea stars, cucumbers, urchins, crabs, and shrimp, also bashing them if needed to be consumed. It will also quickly burrow into the sand bed 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, depending upon their size, are not often recommended for reef aquariums.

Preferable tankmates are those that are larger and somewhat aggressive, e.g., groupers, angelfishes, hawkfishes, and moderately aggressive triggerfishes.

Requires a meaty diet, including fortified brine shrimp, mysis, and other meaty type marine-based frozen for fresh foods, and should be fed twice daily.

Taxonomy:

    Order: Perciformes

    Suborder: Labroidei

    Family: Labridae

    Genus: Halichoeres

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!

The aquarium should have small pieces of rocks for the wrasse to ‘play’ with in its daily search for prey.

Can greatly stir bottom sandbeds creating large clouds of sand being dispensed in many directions.

One male per aquarium.

Experience Level: Intermediate

Temperament: Semi-aggressive

Diet: Carnivore

Coral Safe: Yes

Fish Safe: With caution

Invertebrate Safe: With caution

Acclimation Time: 30 minutes+

Aquarium Environment: Fish-only aquarium

Tankmates: Larger, active and moderately aggressive

Minimum Tank Size: 60 gallons

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

Specific Gravity: 1.020 - 1.026

pH: 8.0 - 8.5

 Halichoeres argus (Argus Wrasse)
Photo © John Randall
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