Anchor Tusk Wrasse (Choerodon Anchorago) saltwater aquarium fish

Overview:

The Anchor Tusk Wrasse (Choerodon anchorago) is a hardy, active marine wrasse best kept by experienced aquarists in a large, stable reef or fish-only system. It grows quite large and needs plenty of open swimming space, along with rockwork arranged to create caves and sleeping areas. Provide a tightly covered aquarium, as wrasses are strong jumpers. Ideal conditions include excellent water quality, strong circulation, stable salinity, and warm tropical temperatures. This species does best in mature tanks with a deep sand bed or soft substrate, since it may rest or bury itself at night. Because it is a robust predator, it should be planned for as a semi-aggressive, high-bioload fish that needs ample filtration and routine maintenance.

Diet and Feeding:

Anchor Tusk Wrasses are carnivorous and should be fed a varied diet rich in meaty foods. Offer high-quality marine pellets or frozen foods such as mysis shrimp, krill, chopped seafood, squid, clam, and silversides. Occasional live or frozen shellfish can help satisfy their natural foraging behavior. Feed smaller portions 2–3 times daily, especially when the fish is young or newly acquired, then adjust based on body condition. Because this species has strong jaws and crushing teeth, it may also eat hard-shelled invertebrates, so avoid assuming it is reef-safe. Uneaten food should be removed promptly to protect water quality.

Compatibility:

This wrasse is generally not a peaceful community fish. It is best housed with other robust, similarly sized tankmates that can tolerate its assertive nature, such as large tangs, angelfish, puffers, triggers, or other sturdy marine species in appropriately large systems. Small fish, ornamental shrimp, crabs, snails, and other mobile invertebrates are at risk of predation. More docile fish may be bullied, especially in smaller aquariums. If keeping multiple wrasses, introduce them carefully and only in very large tanks with sufficient territory and visual barriers. Avoid housing with timid, slow, or delicate species.

Health and Quarantine:

Quarantine is strongly recommended for at least 4–6 weeks before introducing an Anchor Tusk Wrasse to the main system. Observe closely for common marine issues such as marine ich, velvet, bacterial infections, fin damage, and internal parasites. This species can be sensitive to poor shipping conditions, so gradual acclimation and low-stress transfer are important. During quarantine, offer varied foods and monitor appetite, breathing, and feces. Maintain pristine water, stable salinity, and low ammonia, since stress and degraded conditions quickly lead to illness. Preventive care should focus on nutrition, space, and water stability; a healthy Anchor Tusk Wrasse is usually active, alert, and eager to feed.

mysis shrimp brine shrimp high-quality marine flakes/pellets
Anchor Tusk Wrasse is an active, deliberate swimmer that spends much of its time patrolling the lower and mid-water zones, and it benefits from a spacious aquarium with abundant rockwork, caves, and secure hiding spots. It is generally semi-aggressive to territorial, especially as it matures, and conspecifics are often met with hostility unless the system is very large and introductions are carefully managed. A minimum tank size of 125 gallons is recommended, with visual barriers and broken lines of sight helping to reduce stress and limit territorial disputes. In mixed communities, it is best suited to robust tank mates rather than timid species, and while it may coexist with some reef-safe species, it can be unpredictable with small crustaceans and other delicate invertebrates. The species is carnivorous, feeding primarily on benthic prey such as crustaceans, mollusks, worms, and other small invertebrates it hunts from the substrate. A varied diet of meaty marine foods is essential to maintain condition and support its natural foraging behavior.

FAQ

Frequently Asked Questions

About the Anchor Tusk Wrasse

  • Why does my Anchor Tusk Wrasse keep “tusking” at the rocks and shelling out snails?
    That is normal feeding behavior. Anchor Tusk Wrasses use their thick canines and strong jaws to crush hard-shelled prey such as snails, crabs, hermit crabs, and small mollusks. In a reef tank, this means ornamental snails, tiny hermits, and other invertebrates are often fair game. If you want to keep one, expect it to behave like a predator of mobile inverts rather than a true reef-safe wrasse.
  • Is an Anchor Tusk Wrasse safe for a reef tank with corals?
    Usually yes for corals, but not for invertebrates. Anchor Tusk Wrasses are generally considered coral-safe because they do not typically eat coral tissue or damage SPS/LPS/soft corals. The real risk is to shrimp, snails, crabs, small brittle stars, and tiny ornamental creatures. They are best kept in a reef with a “fish-only with coral” mindset, or in a large mixed reef where the cleanup crew and ornamental inverts are acceptable losses.
  • What tank size does an Anchor Tusk Wrasse really need as an adult?
    A large tank is essential. This is a powerful, active wrasse that grows to roughly 10–12 inches and needs room to swim and establish territory. A bare minimum would be around 180 gallons, but larger is better, especially for long-term success. They are strong jumpers, so a tight-fitting lid is mandatory, and the tank should have plenty of open swimming space along with rockwork for security.
  • Does an Anchor Tusk Wrasse need a sandbed to sleep in like some other wrasses?
    Yes, it should have a deep, fine sandbed to bury in at night or when stressed. This species is a burrowing wrasse, and without suitable sand it can become highly stressed, refuse food, or injure itself trying to hide. A soft sandbed of fine aragonite is preferred, and the tank should have calm areas where it can settle in safely after lights out.
  • What should I feed an Anchor Tusk Wrasse to keep it healthy and prevent aggression?
    Feed a varied meaty diet multiple times per day when possible, especially for juveniles. Best foods include chopped shrimp, clam, squid, mussel, krill, marine seafood mixes, and high-quality carnivore pellets that sink. This species has a big appetite and can become aggressive if underfed. Frequent, generous feeding helps reduce tankmate harassment and keeps it in better condition, especially because it is a fast-growing, high-metabolism predator.