The Harlequin Tusk grows up to 10 inches in the wild but is imported at a smaller size, and needs to be kept in tank not less than 60 gallons with plenty of space to swim. It is moderately easy to care for, thus is recommended for the intermediate or advanced aquarist. With its striking coloration and unique design, the Harlequin Tusk makes the most beautiful fish in your aquarium. At its juvenile stage it is mostly found hidden and may become bolder with age. The Harlequin Tusk should be kept only one per tank and is best kept in fish only systems with boisterous wrasses, surgeonfishes, large angelfishes, puffers and triggers. Initially during acclimatization, it may need to feed live saltwater feeders until it learns to accept frozen and prepared foods. The Harlequin Tusk is carnivorous and mainly feeds on chopped meats, small invert, worms, and live feeder shrimps. It is a moderately hardy fish that thrives well in a temperature range of 72-78 degrees Fahrenheit and pH of 8.1-8.4. The Harlequin Tusk is typically shy in nature at its juvenile stage and becomes bold as it matures. It can be housed with moderately aggressive fishes such as Angels, Tangs, and smaller Triggers. We recommend you to keep only one species per tank, and since it may not bother any corals and may found eating small crustaceans such as snails or crabs, it is considered reef safe but with caution. Its diet should include vitamin enriched frozen mysis shrimp, vitamin enriched frozen brine shrimp, and other meaty foods along with a high quality marine flake and marine pellet food.