The “Aloe Wrasse” is a common misidentification for the Hula Wrasse, scientifically known as Thalassoma duperrey. This vibrant marine fish is native to the Pacific Ocean, particularly around the Hawaiian Islands. Its striking appearance and lively behavior make it a popular choice for marine aquarists.
Identifying the Hula Wrasse
The Hula Wrasse exhibits striking coloration. Adults often display a dark blue-green head that transitions into a dull orange band, which can intensify during spawning. The rest of its body is generally blue-green with magenta arrow-like markings along its sides. Juveniles are more whitish with a dark stripe from head to tail, gradually developing the adult pattern as they mature.
This species has an elongated, torpedo-like body shape, allowing for swift movement. Hula Wrasses can reach a total length of up to 28 centimeters (approximately 11 inches).
Natural Environment and Wild Behavior
The Hula Wrasse is endemic to the waters surrounding the Hawaiian Islands and Johnston Atoll. These fish inhabit shallow, rocky reef areas, tide pools, and surge zones at depths ranging from 5 to 25 meters (16 to 82 feet). They are commonly found in areas rich with corals, rocks, and hiding spots.
In its natural habitat, the Hula Wrasse is diurnal, active during the daytime. They are efficient carnivores, with their wild diet consisting of small invertebrates and crustaceans. At night, these wrasses burrow into the sand or find refuge in holes and crevices within the reef to avoid predators.
Keeping Hula Wrasse in Aquariums
Tank Setup and Water Needs
A suitable aquarium for a Hula Wrasse requires ample space due to their active swimming. A minimum tank size of 50 to 75 gallons is recommended for a single adult. The aquascape should include plenty of live rock for hiding spots and territories. A deep sand bed, at least 3 to 4 inches, is necessary for their natural burrowing behavior.
Maintaining stable water parameters is important. Water temperature should range between 22°C and 26°C (72-78°F). Salinity levels should be kept between 1.020 and 1.025 specific gravity, and pH within 8.1 to 8.4. A tight-fitting lid is crucial, as these fish are known jumpers.
Feeding and Diet
Hula Wrasses are active foragers and require a varied diet. High-quality marine flakes and pellets can form the base, supplemented with frozen foods like mysis shrimp, brine shrimp, and chopped meaty foods.
These fish have a high metabolism and a short digestive tract, necessitating frequent feedings. Feed small amounts two to three times daily. Consistent feeding can reduce aggression towards tankmates.
Compatibility and Temperament
The Hula Wrasse is generally peaceful with larger, active fish, but its temperament can vary. They may display aggression towards smaller, more docile tankmates or other wrasse species, especially those with similar body shapes. Their predatory nature means they pose a threat to ornamental invertebrates like shrimp, crabs, and snails.
Suitable tankmates include other active, similarly sized marine fish such as tangs, angelfish, or certain triggers. A well-fed Hula Wrasse is less likely to target clean-up crew members. Ample space and hiding places can help mitigate potential aggression. Their energetic swimming style means they can be boisterous in a community aquarium.